Your search found 39 Results
Implementation effectiveness of revised (post-2010) World Health Organization guidelines on prevention of mother-to-child transmission of HIV using routinely collected data in sub-Saharan Africa: A systematic literature review.
Medicine. 2017 Oct; 96(40):e8055.BACKGROUND: To synthesize and evaluate the impact of implementing post-2010 World Health Organization (WHO) prevention of mother-to-child transmission (PMTCT) guidelines on attainment of PMTCT targets. METHODS: Retrospective and prospective cohort study designs that utilized routinely collected data with a focus on provision and utilization of the cascade of PMTCT services were included. The outcomes included the proportion of pregnant women who were tested during their antenatal clinic (ANC) visits; mother-to-child transmission (MTCT) rate; adherence; retention rate; and loss to follow-up (LTFU). RESULTS: Of the 1210 references screened, 45 met the inclusion criteria. The studies originated from 14 countries in sub-Saharan Africa. The highest number of studies originated from Malawi (10) followed by Nigeria and South Africa with 7 studies each. More than half of the studies were on option A while the majority of option B+ studies were conducted in Malawi. These studies indicated a high uptake of human immunodeficiency virus (HIV) testing ranging from 75% in Nigeria to over 96% in Zimbabwe and South Africa. High proportions of CD4 count testing were reported in studies only from South Africa despite that in most of the countries CD4 testing was a prerequisite to access treatment. MTCT rate ranged from 1.1% to 15.1% and it was higher in studies where data were collected in the early days of the WHO 2010 PMTCT guidelines. During the postpartum period, adherence and retention rate decreased, and LTFU increased for both HIV-positive mothers and exposed infants. CONCLUSION: Irrespective of which option was followed, uptake of antenatal HIV testing was high but there was a large drop off along later points in the PMTCT cascade. More research is needed on how to improve later components of the PMTCT cascade, especially of option B+ which is now the norm throughout sub-Saharan Africa.
Uptake and performance of prevention of mother-to-child transmission and early infant diagnosis in pregnant HIV infected women and their exposed infants at seven health centres in Addis Ababa, Ethiopia.
Tropical Medicine and International Health. 2017 Jun; 22(6):765-775.Objective To assess the uptake of WHO-recommended PMTCT procedures in Ethiopia's health services. Methods Prospective observational study of HIV-positive pregnant mothers and their newborns attending PMTCT services at seven health centers in Addis Ababa. Women were recruited during antenatal care and followed-up with their newborns at delivery, day 6 and week 6 postpartum. Retention to PMCTC procedures, self-reported ART adherence, and HIV infant outcome were assessed. Turnaround times of HIV early infant diagnosis (EID) procedures were extracted from health registers. Results Of 494 women enrolled 4.9% did not complete PMTCT procedures due to active denial or loss to follow-up. HIV was first diagnosed in 223 (45.1%) and ART initiated in 321 (65.0%) women during pregnancy. ART was initiated in a median of 1.3 weeks (IQR 0-4.3) after HIV diagnosis. Poor self-reported treatment adherence was higher post-partum than during pregnancy (12.5% versus 7.0%, p=0.002), and significantly associated with divorced/separated marital status (RR 2.2, 95% CI 1.3-3.8), low family income (RR 2.1, 95% CI 1.1-4.1), low CD4-count (RR 1.7, 95% CI 1.0-3.0), and ART initiation during delivery (RR 2.5, 95% CI 1.1-5.6). Of 435 infants born alive 98.6% received nevirapine prophylaxis. The mother-to-child HIV transmission rate was 0.7% after a median of 6.7 weeks (IQR 6.4-10.4), but EID results were received for only 46.6% within 3 months of birth. Conclusion High retention in PMTCT services, triple maternal ART and high infant nevirapine prophylaxis coverage were associated with low mother-to-child HIV transmission. Declining post-partum ART adherence and challenges of EID linkage require attention.
Performance of Risk Charts to Guide Targeted HIV Viral Load Monitoring of ART: Applying the Method on the Data From a Multicenter Study in Rural Lesotho.
Journal of Acquired Immune Deficiency Syndromes. 2016 May 1; 72(1):e22-5.Add to my documents.
Efficacy of WHO recommendation for continued breastfeeding and maternal cART for prevention of perinatal and postnatal HIV transmission in Zambia.
Journal of the International AIDS Society. 2015; 18:19352.INTRODUCTION: To prevent mother-to-child transmission (MTCT) of HIV in developing countries, new World Health Organization (WHO) guidelines recommend maternal combination antiretroviral therapy (cART) during pregnancy, throughout breastfeeding for 1 year and then cessation of breastfeeding (COB). The efficacy of this approach during the first six months of exclusive breastfeeding has been demonstrated, but the efficacy of this approach beyond six months is not well documented. METHODS: A prospective observational cohort study of 279 HIV-positive mothers was started on zidovudine/3TC and lopinavir/ritonavir tablets between 14 and 30 weeks gestation and continued indefinitely thereafter. Women were encouraged to exclusively breastfeed for six months, complementary feed for the next six months and then cease breastfeeding between 12 and 13 months. Infants were followed for transmission to 18 months and for survival to 24 months. Text message reminders and stipends for food and transport were utilized to encourage adherence and follow-up. RESULTS: Total MTCT was 9 of 219 live born infants (4.1%; confidence interval (CI) 2.2-7.6%). All breastfeeding transmissions that could be timed (5/5) occurred after six months of age. All mothers who transmitted after six months had a six-month plasma viral load >1,000 copies/ml (p<0.001). Poor adherence to cART as noted by missed dispensary visits was associated with transmission (p=0.04). Infant mortality was lower after six months of age than during the first six months of life (p=0.02). The cumulative rate of infant HIV infection or death at 18 months was 29/226 (12.8% 95 CI: 7.5-20.8%). CONCLUSIONS: Maternal cART may limit MTCT of HIV to the UNAIDS target of <5% for eradication of paediatric HIV within the context of a clinical study, but poor adherence to cART and follow-up can limit the benefit. Continued breastfeeding can prevent the rise in infant mortality after six months seen in previous studies, which encouraged early COB.
Implementation of the WHO safe childbirth checklist program at a tertiary care setting in Sri Lanka: a developing country experience.
BMC Pregnancy and Childbirth. 2015; 15:12.BACKGROUND: To study institutionalization of the World Health Organization's Safe Childbirth Checklist (SCC) in a tertiary care center in Sri Lanka. METHOD: A hospital-based, prospective observational study was conducted in the De Soysa Hospital for Women, Colombo, Sri Lanka. Healthcare workers were educated regarding the SCC, which was to be used for each woman admitted to the labor room during the study period. A qualitatively pretested, self-administered questionnaire was given to all nursing and midwifery staff to assess knowledge and attitudes towards the checklist. Each item of the SCC was reviewed for adherence. RESULTS: A total of 824 births in which the checklist used were studied. There were a total of births 1800 during the period, giving an adoption rate of 45.8%. Out of the 170 health workers in the hospital (nurses, midwives and nurse midwives) 98 answered the questionnaire (response rate = 57.6%). The average number of childbirth practices checked in the checklist was 21 out of 29 (95% CI 20.2, 21.3). Educating the mother to seek help during labor, after delivery and after discharge from hospital, seeking an assistant during labor, early breast-feeding, maternal HIV infection and discussing contraceptive options were checked least often. The mean level of knowledge on the checklist among health workers was 60.1% (95% CI 57.2, 63.1). Attitudes for acceptance of using the checklist were satisfactory. Average adherence to checklist practices was 71.3%. Sixty eight (69.4%) agreed that the Checklist stimulates inter-personal communication and teamwork. Increased workload, poor enthusiasm of health workers towards new additions to their routine schedule and level of user-friendliness of Checklist were limitations to its greater use. CONCLUSIONS: Amongst users, the attitude towards the checklist was satisfactory. Adoption rate amongst all workers was 45.8% and knowledge regarding the checklist was 60.1%. These two factors are probably linked. Therefore prior to introducing it to a facility awareness about the value and correct use of the SCC needs to be increased, while giving attention to satisfactory staffing levels.
Improving tuberculosis screening and isoniazid preventive therapy in an HIV clinic in Addis Ababa, Ethiopia.
International Journal of Tuberculosis and Lung Disease. 2013 Nov; 17(11):1396-401.BACKGROUND: The World Health Organization (WHO) recommends active tuberculosis (TB) case finding among people living with human immunodeficiency virus (HIV) in resource-limited settings using a symptom-based algorithm; those without active TB disease should be offered isoniazid preventive therapy (IPT). OBJECTIVE: To evaluate rates of adherence to WHO recommendations and the impact of a quality improvement intervention in an HIV clinic in Addis Ababa, Ethiopia. DESIGN: A prospective study design was utilized to compare TB symptom screening and IPT administration rates before and after a quality improvement intervention consisting of 1) educational sessions, 2) visual reminders, and 3) use of a screening checklist. RESULTS: A total of 751 HIV-infected patient visits were evaluated. The proportion of patients screened for TB symptoms increased from 22% at baseline to 94% following the intervention (P < 0.001). Screening rates improved from 51% to 81% (P < 0.001) for physicians and from 3% to 100% (P < 0.001) for nurses. Of the 281 patients with negative TB symptom screens and eligible for IPT, 4% were prescribed IPT before the intervention compared to 81% after (P < 0.001). CONCLUSIONS: We found that a quality improvement intervention significantly increased WHO-recommended TB screening rates and IPT administration. Utilizing nurses can help increase TB screening and IPT provision in resource-limited settings.
Efavirenz conceptions and regimen management in a prospective cohort of women on antiretroviral therapy.
Infectious Diseases In Obstetrics and Gynecology. 2012; 2012:723096.Use of the antiretroviral drug efavirenz (EFV) is not recommended by the WHO or South African HIV treatment guidelines during the first trimester of pregnancy due to potential fetal teratogenicity; there is little evidence of how clinicians manage EFV-related fertility concerns. Women on antiretroviral therapy (ART) were enrolled into a prospective cohort in four public clinics in Johannesburg, South Africa. Fertility intentions, ART regimens, and pregnancy testing were routinely assessed during visits. Women reporting that they were trying to conceive while on EFV were referred for regimen changes. Kaplan-Meier estimators were used to assess incidence across ART regimens. From the 822 women with followup visits between August 2009-March 2011, 170 pregnancies were detected during study followup, including 56 EFV conceptions. Pregnancy incidence rates were comparable across EFV, nevirapine, and lopinavir/ritonavir person-years (95% 100/users (P=0.25)); incidence rates on EFV were 18.6 Confidence Interval: 14.2-24.2). Treatment substitution from EFV was made for 57 women, due to pregnancy intentions or actual pregnancy; however, regimen changes were not systematically applied across women. High rates of pregnancy on EFV and inconsistencies in treatment management suggest that clearer guidelines are needed regarding how to manage fertility-related issues in. women on EFV-based regimens.
Performance of the new WHO diagnostic algorithm for smear-negative pulmonary tuberculosis in HIV prevalent settings: a multisite study in Uganda.
Tropical Medicine and International Health. 2012 Jul; 17(7):884-95.OBJECTIVE: To compare the performance of the new WHO (2007) diagnostic algorithm for pulmonary tuberculosis (PTB) in high HIV prevalent settings (WHO07) to the WHO 2003 guidelines used by the Ugandan National Tuberculosis Program (UgWHO03). METHODS: A prospective observational cohort design was used at Reach Out Mbuya Parish HIV/AIDS Initiative, an urban slum community-based AIDS Service Organisation (ASO) and Kayunga Rural District Government Hospital. Newly diagnosed and enrolled HIV-infected patients were assessed for PTB. Research staff interviewed patients and staff and observed operational constraints. RESULTS: WHO07 reduced the time to diagnosis of smear-negative PTB with increased sensitivity compared with the UgWHO03 at both sites. Time to diagnosis of smear-negative PTB was significantly shorter at the urban ASO than at the rural ASO (12.4 vs. 28.5 days, P = 0.003). Diagnostic specificity and sensitivity [95% confidence intervals (CIs)] for smear-negative PTB were higher at the rural hospital compared with the urban ASO: [98% (93-100%) vs. 86% (77-92%), P = 0.001] and [95% (72-100%) vs. 90% (54-99%), P > 0.05], respectively. Common barriers to implementation of algorithms included failure by patients to attend follow-up appointments and poor adherence by healthcare workers to algorithms. CONCLUSION: At both sites, WHO07 expedited diagnosis of smear-negative PTB with increased diagnostic accuracy compared with the UgWHO03. The WHO07 expedited diagnosis more at the urban ASO but with more diagnostic accuracy at the rural hospital. Barriers to implementation should be taken into account when operationalising these guidelines for TB diagnosis in resource-limited settings. (c) 2012 Blackwell Publishing Ltd.
Birth. 2011 Sep; 38(3):238-45.BACKGROUND: The World Health Organization (WHO) developed the Baby-Friendly Hospital Initiative to improve hospital maternity care practices that support breastfeeding. In Hong Kong, although no hospitals have yet received the Baby-Friendly status, efforts have been made to improve breastfeeding support. The aim of this study was to examine the impact of Baby-Friendly hospital practices on breastfeeding duration. METHODS: A sample of 1,242 breastfeeding mother-infant pairs was recruited from four public hospitals in Hong Kong and followed up prospectively for up to 12 months. The primary outcome variable was defined as breastfeeding for 8 weeks or less. Predictor variables included six Baby-Friendly practices: breastfeeding initiation within 1 hour of birth, exclusive breastfeeding while in hospital, rooming-in, breastfeeding on demand, no pacifiers or artificial nipples, and information on breastfeeding support groups provided on discharge. RESULTS: Only 46.6 percent of women breastfed for more than 8 weeks, and only 4.8 percent of mothers experienced all six Baby-Friendly practices. After controlling for all other Baby-Friendly practices and possible confounding variables, exclusive breastfeeding while in hospital was protective against early breastfeeding cessation (OR: 0.61; 95% CI: 0.42-0.88). Compared with mothers who experienced all six Baby-Friendly practices, those who experienced one or fewer Baby-Friendly practices were almost three times more likely to discontinue breastfeeding (OR: 3.13; 95% CI: 1.41-6.95). CONCLUSIONS: Greater exposure to Baby-Friendly practices would substantially increase new mothers' chances of breastfeeding beyond 8 weeks postpartum. To further improve maternity care practices in hospitals, institutional and administrative support are required to ensure all mothers receive adequate breastfeeding support in accordance with WHO guidelines. (c) 2011, Copyright the Authors. Journal compilation (c) 2011, Wiley Periodicals, Inc.
WHO guidelines for antimicrobial treatment in children admitted to hospital in an area of intense Plasmodium falciparum transmission: prospective study.
BMJ. British Medical Journal. 2010; 340:c1350.OBJECTIVES: To assess the performance of WHO's "Guidelines for care at the first-referral level in developing countries" in an area of intense malaria transmission and identify bacterial infections in children with and without malaria. DESIGN: Prospective study. SETTING: District hospital in Muheza, northeast Tanzania. PARTICIPANTS: Children aged 2 months to 13 years admitted to hospital for febrile illness. MAIN OUTCOME MEASURES: Sensitivity and specificity of WHO guidelines in diagnosing invasive bacterial disease; susceptibility of isolated organisms to recommended antimicrobials. RESULTS: Over one year, 3639 children were enrolled and 184 (5.1%) died; 2195 (60.3%) were blood slide positive for Plasmodium falciparum, 341 (9.4%) had invasive bacterial disease, and 142 (3.9%) were seropositive for HIV. The prevalence of invasive bacterial disease was lower in slide positive children (100/2195, 4.6%) than in slide negative children (241/1444, 16.7%). Non-typhi Salmonella was the most frequently isolated organism (52/100 (52%) of organisms in slide positive children and 108/241 (45%) in slide negative children). Mortality among children with invasive bacterial disease was significantly higher (58/341, 17%) than in children without invasive bacterial disease (126/3298, 3.8%) (P<0.001), and this was true regardless of the presence of P falciparum parasitaemia. The sensitivity and specificity of WHO criteria in identifying invasive bacterial disease in slide positive children were 60.0% (95% confidence interval 58.0% to 62.1%) and 53.5% (51.4% to 55.6%), compared with 70.5% (68.2% to 72.9%) and 48.1% (45.6% to 50.7%) in slide negative children. In children with WHO criteria for invasive bacterial disease, only 99/211(47%) of isolated organisms were susceptible to the first recommended antimicrobial agent. CONCLUSIONS: In an area exposed to high transmission of malaria, current WHO guidelines failed to identify almost a third of children with invasive bacterial disease, and more than half of the organisms isolated were not susceptible to currently recommended antimicrobials. Improved diagnosis and treatment of invasive bacterial disease are needed to reduce childhood mortality.
Total lymphocyte count and World Health Organization pediatric clinical stage as markers to assess need to initiate antiretroviral therapy among human immunodeficiency virus-infected children in Moshi, Northern Tanzania.
Pediatric Infectious Disease Journal. 2009 Jun; 28(6):493-7.BACKGROUND: The World Health Organization (WHO) has recommended the use of clinical staging alone and with total lymphocyte count to identify HIV infected children in need of antiretroviral therapy (ART) in resource-limited settings, when CD4 cell count is not available.METHODS: We prospectively enrolled children obtaining care for HIV infection at the Kilimanjaro Christian Medical Centre Pediatric Infectious Diseases Clinic in Moshi, Tanzania between March 2004 and May 2006 for this cohort study.RESULTS: One hundred ninety two (89.7%) of 214 children met WHO ART initiation criteria based on clinical staging or CD4 cell count. Several low-cost measures identified individuals who met WHO ART initiation criteria to the following degree: WHO stages 3 or 4 had 87.5% (95% CI, 82.8-92.1) sensitivity and, by definition, 100% (CI, 100-100) specificity; WHO recommended advance disease TLC cutoffs: sensitivity = 23.9% (95% CI, 17.3-30.5) specificity = 78.2% (95% CI, 67.3-89.1). Low TLC was a common finding, (50 of 214; 23%); however, it did not improve the sensitivity or specificity of clinical staging in identifying the severely immunosuppressed stage 2 children. Growth failure or use of total lymphocyte counts in isolation were not reliable indicators of severe immunosuppression or need to initiate ART.CONCLUSION: The use of total lymphocyte count does not improve the ability to identify children in need of ART compared with clinical staging alone. Low absolute lymphocyte count did not correlate with severe immunosuppression based on CD4 cell count in this cohort.
Validation of 2006 WHO prediction scores for true HIV infection in children less than 18 months with a positive serological HIV test.
PloS One. 2009; 4(4):e5312.INTRODUCTION: All infants born to HIV-positive mothers have maternal HIV antibodies, sometimes persistent for 18 months. When Polymerase Chain Reaction (PCR) is not available, August 2006 World Health Organization (WHO) recommendations suggest that clinical criteria may be used for starting antiretroviral treatment (ART) in HIV seropositive children <18 months. Predictors are at least two out of sepsis, severe pneumonia and thrush, or any stage 4 defining clinical finding according to the WHO staging system. METHODS AND RESULTS: From January 2005 to October 2006, we conducted a prospective study on 236 hospitalized children <18 months old with a positive HIV serological test at the national reference hospital in Kigali. The following data were collected: PCR, clinical signs and CD4 cell count. Current proposed clinical criteria were present in 148 of 236 children (62.7%) and in 95 of 124 infected children, resulting in 76.6% sensitivity and 52.7% specificity. For 87 children (59.0%), clinical diagnosis was made based on severe unexplained malnutrition (stage 4 clinical WHO classification), of whom only 44 (50.5%) were PCR positive. Low CD4 count had a sensitivity of 55.6% and a specificity of 78.5%. CONCLUSION: As PCR is not yet widely available, clinical diagnosis is often necessary, but these criteria have poor specificity and therefore have limited use for HIV diagnosis. Unexplained malnutrition is not clearly enough defined in WHO recommendations. Extra pulmonary tuberculosis (TB), almost impossible to prove in young children, may often be the cause of malnutrition, especially in HIV-affected families more often exposed to TB. Food supplementation and TB treatment should be initiated before starting ART in children who are staged based only on severe malnutrition.
Symptom-based screening of child tuberculosis contacts: improved feasibility in resource-limited settings.
Pediatrics. 2008 Jun; 121(6):e1646-52.OBJECTIVE: National tuberculosis programs in tuberculosis-endemic countries rarely implement active tracing and screening of child tuberculosis contacts, mainly because of resource constraints. We aimed to evaluate the safety and feasibility of applying a simple symptom-based approach to screen child tuberculosis contacts for active disease. METHODS: We conducted a prospective observational study from January through December 2004 at 3 clinics in Cape Town, South Africa. All of the children <5 years old in household contact with an adult tuberculosis source case were assessed by documenting current symptoms and tuberculin skin test and chest radiograph results. RESULTS: During the study period, 357 adult tuberculosis cases were identified; 195 cases (54.6%) had sputum smear and/or culture positive results and were in household contact with children aged <5 years. Complete information was available for 252 of 278 children; 176 (69.8%) were asymptomatic at the time of screening. Tuberculosis treatment was administered to 33 (13.1%) of 252; 27 were categorized as radiologically "certain tuberculosis," the majority (n = 22) of which had uncomplicated hilar adenopathy. The negative predictive value of symptom-based screening varied according to the case definition used, with 95.5% including all of the children treated for tuberculosis and 97.1% including only those with radiologically "certain tuberculosis." CONCLUSIONS: Our findings support current World Health Organization recommendations, demonstrating that symptom-based screening of child tuberculosis contacts should improve feasibility in resource-limited settings and seems to be safe.
Appropriate infant feeding practices result in better growth of infants and young children in rural Bangladesh.
American Journal of Clinical Nutrition. 2008 Jun; 87(6):1852-1859.The World Health Organization and the United Nations International Children's Emergency Fund recommend a global strategy for feeding infants and young children for proper nutrition and health. We evaluated the effects of following current infant feeding recommendations on the growth of infants and young children in rural Bangladesh. The prospective cohort study involved 1343 infants with monthly measurements on infant feeding practices (IFPs) and anthropometry at 17 occasions from birth to 24 mo of age to assess the main outcomes of weight, length, anthropometric indexes, and undernutrition. We created infant feeding scales relative to the infant feeding recommendations and modeled growth trajectories with the use of multilevel models for change. Mean (+or- SD) birth weight was 2697 +or- 401 g; 30%weighed less than 2500 g. Mean body weight at 12 and 24 mo was 7.9 +or- 1.1 kg and 9.7 +or- 1.3 kg, respectively. More appropriate IFPs were associated (P less than 0.001) with greater gain in weight andlength during infancy. Prior IFPs were also positively associated (P less than 0.005) with subsequent growth in weight during infancy. Children who were in the 75th percentile of the infant feeding scales had greater (P less than 0.05) attained weight and weight-for-age z scores and lower proportions of underweight compared with children who were in the 25th percentile of these scales. Our results provide strong evidence for the positive effects of following the current infant feeding recommendations on growth of infants and young children. Intervention programs should strive to improve conditions for enhancing current infant feeding recommendations, particularly in low-income countries. (author's)
HIV serological screening in a population of pregnant women in the Republic of Congo: Suitability of different assays.
Tropical Medicine and International Health. 2008 Jul; 13(7):1-4.Different strategies can be applied for the screening of HIV infection, depending on the local seroprevalence. Within a WHO type III strategy, we compared the results of two different second-line methods for HIV screening of a population of pregnant women in the Republic of Congo. Sera from 3614 consecutive pregnant women were tested for HIV with Genescreen Plus Ag/Ab EIA assay; positive specimens were retested with two different second-line methods. (Determine HIV-1/2 rapid test and Vironostika HIV Ag/Ab specific EIA assay). Discordant samples were tested with HIV-1/2 Western Blot and, if necessary, HIV RNA molecular assay. Of the 3614 sera, 221 were positive with Genscreen. Among them, 21 and 10 tested negative with Vironostika and Determine, respectively. A 100% correspondence with 3rd line confirmation test results was found in Genscreen positive/Vironostika negative samples, whereas a 5.5% overestimation of HIV seroprevalence was observed when Determine, instead of Vironostika, was used as second-line test. The choice of appropriate assays in adequate sequence, within the correct WHO strategy, is pivotal to minimize the risk of overtreatment of HIV infection. (author's)
Safety of switching to nevirapine-based highly active antiretroviral therapy at elevated CD4 cell counts in a resource-constrained setting [letter]
Journal of Acquired Immune Deficiency Syndromes. 2007 Aug 15; 45(5):598-600.The World Health Organization recommends the use of generic nevirapine (NVP)/efavirenz (EFV)-based highly active antiretroviral therapy (HAART) regimens as first-line therapy in the management of HIV in resource-limited settings. Initiating NVP-based HAART at elevated CD4 cell counts can lead to liver toxicity. Short-term risk of liver toxicity has been reported in men with CD4 counts greater than 400 cells/mL and in women with CD4 counts greater than 250 cells/mL. Hence, clinicians are advised to monitor the results of liver chemistry tests closely in the first 18 weeks of therapy because of the potential to develop life-threatening hepatic events. Mocroft et al showed that initiating NVP therapy at elevated CD4 levels may be safe for use in antiretroviral-experienced patients. Little is known about short-term adverse consequences and clinical outcome at elevated CD4 cell counts in a resource-limited setting. (author's)
Progression to WHO criteria for antiretroviral therapy in a 7-year cohort of adult HIV-1 seroconverters in Abidjan, Côte d'Ivoire.
Bulletin of the World Health Organization. 2007 Feb; 85(2):116-123.The objective was to estimate the probability of reaching the criteria for starting highly active antiretroviral therapy (HAART) in a prospective cohort of adult HIV-1 seroconverters in Abidjan, Côte d'Ivoire. We recruited participants from HIV-positive donors at the blood bank of Abidjan for whom the delay since the estimated date of seroconversion (midpoint between last negative and first positive HIV-1 test) was = 36 months. Participants were offered early trimethoprim-sulfamethoxazole (cotrimoxazole) prophylaxis, twice-yearly measurement of CD4 count and we made standardized records of morbidity. We used the Kaplan-Meier method to estimate the probability of reaching the criteria for starting HAART according to WHO 2006 guidelines. 217 adults (77 women (35%)) were followed up during 668 person-years (PY). The most frequent diseases recorded were mild bacterial diseases (6.0 per 100 PY), malaria (3.6/100 PY), herpes zoster (3.4/100 PY), severe bacterial diseases (3.1/100 PY) and tuberculosis (2.1/100 PY). The probability of reaching the WHO 2006 criteria for HAART initiation was estimated at 0.09, 0.16, 0.24, 0.36 and 0.44 at 1, 2, 3, 4 and 5 years, respectively. Our data underline the incidence of the early HIV morbidity in an Ivorian adult population and provide support for HIV testing to be made more readily available and for early follow-up of HIV-infected adults in West Africa. (author's)
The World Health Organization multinational study of breast-feeding and lactational amenorrhea. II. Factors associated with the length of amenorrhea.
Fertility and Sterility. 1998 Sep; 70(3):461-471.The objective was to determine the relation between infant feeding practices (and other factors) and the duration of postpartum amenorrhea, and to establish whether there are real differences in the duration of postpartum amenorrhea for similar breast-feeding practices in different populations. Design: Prospective, nonexperimental, longitudinal follow-up study. Setting: Five developing and two developed countries. Patient(s): Four thousand one hundred eighteen breast-feeding mothers and their infants. Breast-feeding women collected ongoing information about infant feeding and family planning practices, plus the return of menses. Fortnightly follow-up occurred in the women's homes. A multivariate analysis explored the association between the risk of menses return and 16 infant feeding variables and 11 other characteristics. Ten factors (in addition to center effects) were significantly related to the duration of amenorrhea. Seven of these were infant feeding characteristics and the remaining three were high parity, low body mass index, and a higher frequency of infant illness. The breast-feeding stimulus is strongly linked to the duration of postpartum amenorrhea. Cross-cultural effects also are extremely important and may have caused the variations in feeding, the variation in amenorrhea, or both. (author's)
The WHO dengue classification and case definitions: time for a reassessment. [Clasificación del dengue y definición de casos de la OMS: tiempo de una nueva evaluación]
Lancet. 2006 Jul 8; 368(9530):170-173.Dengue is the most prevalent mosquito-borne viral disease in people. It is caused by four dengue virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4), of the genus Flavivirus, and transmitted by Aedes aegypti mosquitoes. Infection provides life-long immunity against the infecting viral serotype, but not against the other serotypes. Although most of the estimated 100 million dengue virus infections each year do not come to the attention of medical staff , of those that do, the most common clinical manifestation is non-specific febrile illness or classic dengue fever. About 250 000--500 000 patients developing more severe disease. The risk of severe disease is several times higher in sequential than in primary dengue virus infections. Despite the large numbers of people infected with the virus each year, the existing WHO dengue classification scheme and case definitions have some drawbacks. In addition, the widely used guidelines are not always reproducible in different countries--a quality that is crucial to effective surveillance and reporting as well as global disease comparisons. And, as dengue disease spreads to different parts of the globe, several investigators have reported difficulties in using the system, and some have had to create new categories or new case definitions to represent the observed patterns of disease more accurately. (excerpt)
Evaluation of a community level nutrition information system for action in a rural community of Zaria, northern Nigeria.
Annals of African Medicine. 2004; 3(3):120-125.The aim was to improve evidence-based action at the community level, UNICEF developed a nutrition information management strategy called Community Level Nutrition Information System for Action (COLNISA). It uses a participatory cycle of assessment, analysis and action to solve nutritional and health related problems. Structured questionnaires were administered to mothers with children under the age of five in 67 households before intervention and 24 months later. Showed statistically significant changes in maternal literacy [7(10%) vs. 24(36%)] and engagement in income generating activities [17(26%) vs. 54(81%)]. Similarly, the proportion of mothers attending antenatal care during pregnancy increased almost six-fold [7(10%) vs. 40(59%)]. Significant improvements were also observed in mothers' knowledge of exclusive breastfeeding [21(32%) vs. 62(93%)], practices of complementary feeding [11(16%) vs. 39(58%)] and oral rehydration therapy [16(24%) vs. 47(70%)]. Furthermore, there were significant increases in the proportion of under fives that were growth monitored [4(5%) vs. 46(83%)] and fully immunized [7(10%) vs. 22(33%)]. Conversely, there was a reduction in the proportion of stunted, wasted and underweight children [51(77%), 11(17%) and 41(61%)] vs. [50(75%), 8(12%) and 33(49%)]. The changes in nutritional indices were however, not statistically significant. This study shows that the COLNISA strategy has a positive impact on basic social, health and nutritional indices and engenders community participation. A controlled trial is however advocated before its wholesale application. (author's)
SCN News. 2002 Dec; (25):4-30.This paper addresses the most common nutrition and health problems in turn, assessing the extent of the problem; the impact of the condition on overall development, and what programmatic responses can be taken to remedy the problem through the school sys- tern. The paper also acknowledges that an estimated 113m children of school-age are not in school, the majority of these children living in Sub-Saharan Africa and South-East Asia. Poor health and nutrition that differentially affects this population is also discussed. (excerpt)
Studies in Family Planning. 2003 Jun; 34(2):87-102.Legal abortions are authorized medical procedures, and as such, they are or can be recorded at the health facility where they are performed. The incidence of illegal, often unsafe, induced abortion has to be estimated, however. In the literature, no fewer than eight methods have been used to estimate the frequency of induced abortion: the “illegal abortion provider survey,” the “complications statistics” approach, the “mortality statistics” approach, self-reporting techniques, prospective studies, the “residual” method, anonymous third party reports, and experts’ estimates. This article describes the methodological requirements of each of these methods and discusses their biases. Empirical records for each method are reviewed, with particular attention paid to the contexts in which the method has been employed successfully. Finally, the choice of an appropriate method of estimation is discussed, depending on the context in which it is to be applied and on the goal of the estimation effort. (author's)
Evaluation of the WHO / UNICEF algorithm for integrated management of childhood illness between the age of two months to five years.
Indian Pediatrics. 1999 Aug; 36(8):767-8.Objective: To evaluate the utility of the "WHO/UNICEF algorithm for integrated management of childhood illness (IMCI) between the age of 2 months to 5 years. Design: Prospective observational. The Outpatient Department and Emergency Room of a medical college hospital. 203 children presenting to Outpatient Department (n= 101) or Emergency Room (n=102) were assessed and classified as per 'IMCr algorithm and treatment required was identified. A detailed evaluation with all relevant investigations was also done for these subjects. The final diagnoses made and therapies instituted on this basis served as "gold standard'. The diagnostic and therapeutic agreements between the "gold standard' and the IMCI and vertical (on the basis of primary presenting complaint) algorithms were computed. Results: More than one illness was present in 135 (66.5%) of subjects as per "gold standard'. The mean (SD) numbers of morbidities as per the gold standard and IMCI- low and high malaria risks were 2.1 (1.1), 1.8 (1.0) and 2.2 (1.1), respectively. Subjects having any referral criteria as per IMCI module had a greater co-existence of illnesses (mean 2.6 vs. 1.6 illnesses per child, respectively). The referral criteria proved useful in predicting hospitalization and a combination of hospitalization and observation; their sensitivity and specificity were 81% and 69% and 74% and 85%, respectively. IMCI algorithms covered majority (92%) of the recorded illnesses. A total agreement with IMCI (malaria low risk) was found in 129 (64%) cases while in 43 (22%) cases, there was partial agreement. Corresponding figures for vertical (split IMCI) program were 93 (46%; p<0.001) and 41 (25%). The difference was primarily due to under diagnoses (30%). Diagnostic discordance of IMCI algorithm and gold standard was evident for the cough category due to under diagnosis of bronchial asthma and bronchiolitis and an over diagnosis of pneumonia whereas the discordance for fever was due to an over diagnosis of malaria. Identical results were found for broad treatment categories. The IMCI algorithm had a provision for preventive services of immunization (16.3% possibility of availing missed opportunities) and feeding advice. There is a sound scientific basis for adopting the IMCI approach since: (i) co-existence of morbidities is frequent; (ii) severe illness is assessed with good sensitivity and specificity; and (iii) the IMCI algorithm is diagnostically and therapeutically superior to the vertical disease specific algorithms. The generic IMCI algorithm needs adaptation to reflect the regional morbidity profile. (author's)
In: Operations research family planning database project summaries, [compiled by] Population Council. New York, New York, Population Council, 1993 Mar.  p. (BOL-03)Longterm contraceptive methods, such as Norplant, are receiving broader acceptance, particularly among women who are not yet ready to consider sterilization. In countries such as Bolivia, where the availability of family planning (FP) methods remains limited, the introduction and diffusion of a culturally acceptable, safe, and effective method should contribute to an increase in contraceptive acceptance and prevalence. Therefore, in 1990, the Population Council allotted US $35,700 to a 3-year prospective clinical study of Norplant with the Hospital Obrero No. 1 of the Bolivian Caja Nacional de Salud (CNS). The project is intended to evaluate local experience in the use of Norplant to facilitate its introduction. Ultimately, it is hoped that a high quality FP clinic and training center will be established to facilitate expansion of Norplant. The project has 4 major objectives: 1) to assess the demand for Norplant; 2) to compare the sociocultural, health, and psychological characteristics of Norplant and IUD (CuT380A) acceptors; 3) to compare the clinical performance of Norplant with CuT380A; and 4) to compare the cost effectiveness of Norplant with CuT380A. The project entails 3 research components: 1) a preintroduction study to gather socioeconomic, medical, and previous contraceptive use data on all prospective and actual Norplant users (at periodic intervals, beginning when a sufficient number of volunteers have completed at least 6 months of use, statistical analysis of the method's performance will be undertaken); 2) a comparative study of Norplant and CuT380A performance; and 3) a comparison of the cost-effectiveness of the 2 methods. Results of this comparison are expected to provide the CNS with information to decide on the appropriateness of including Norplant within its FP service delivery program. It is hypothesized that the impact of this method on a FP program will be greater if Norplant does not replace other highly effective contraceptives and if acceptors are young and of low parity. Research to date indicates that the cost of Norplant insertion at CNS, including only materials and physician time, averages US $13.95, while the cost of an IUD insertion is estimated at $9.49. Adding product costs of US $22 for Norplant and $1.25 for the CuT380A yields a total insertion cost of $35.95 and $10.74, respectively. Based on these figures, the only point at which costs would approach parity is where IUD continuation averaged less than 2 years and Norplant continuation approached the maximum 5 years. Between the start-up of clinical activities in February and August 1991, 106 Norplant insertions had been performed by CNS (more than half the insertions projected for the project). The project will be expanded in 1992 to involve Servicios de Investigacion y Accion en Poblacion, a private program with extensive experience in social science research.
New York, New York, United Nations, 1992. viii, 400 p. (ST/ESA/SER.A/128)Available child mortality data are provided since the 1960s for 82 developing countries, arranged alphabetically, with a population of >1 million. The scope and methodology of the data, the main findings, a guide to the notation and layout of the database, and country specific profiles are included. Available data are included from many different sources without adjustment; graphs are provided. There is a brief discussion of the nature of child mortality and the methods used to measure it such as the crude death rate, age specific death rates, the infant mortality rate, <5 mortality, mortality 1-5 years, and model life tables for age specific child mortality. There is also discussion of the various data sources and estimation methods: vital registration data, prospective surveys, household surveys, prospective sample surveys, surveillance systems, retrospective questions in censuses and surveys, questions on recent household deaths by age, Brass method questions to whom on aggregate number of children born or dead, questions on women's most recent birth and survival, and maternity histories. Commentary is provided on the common index approach and the intersurvey change approach to evaluation of child mortality estimates. There is not 1 best method for measuring mortality. Countries with the most complete reporting of vital registration data are Hong Kong, Israel, Mauritius, Puerto Rico, and Singapore. Countries with incomplete data which does not provide a good measure of child mortality are Egypt, El Salvador, Guatemala, Jamaica, and Trinidad and Tobago. Brass estimates which agree with vital registration data include the following countries: Costa Rica, Cuba, Kuwait, and Peninsular Malaysia. Indirect estimates which confirm vital registration data pertain to Chile and Uruguay. Brass questions provide satisfactory results in Costa Rica, Cuba, Egypt, El Salvador, Guatemala, Jamaica, Sri Lanka, and Trinidad and Tobago. Underestimates are expected for Argentina and Egypt. Indirect methods applied to census data provide good estimates for 23 countries, indirect methods applied to survey data yields good estimates for 21 countries, and direct calculations from maternity histories provide good estimates for 20 countries. 17 countries have poor results from maternity histories alone. Child mortality may have fallen by >50% in developing countries between 1960-85.