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Report of the Expanded Programme on Immunization Global Advisory Group Meeting, 20-23 October 1980, Geneva.
[Unpublished] 1980. 39 p. (EPI/GEN/80/1)This report of the Expanded Program on Immunization (EPI) Global Advisory Group Meeting, held during October 1980 in Geneva, Switzerland, presents conclusions and recommendations, global and regional overviews, working group discussions, and outlines global advisory group activities for 1981. In terms of global strategies, the EPI confronts dual challenges: to reduce morbidity and mortality by providing immunizations for all children of the world by 1990; and to develop immunization services in consonance with other health services, particularly those directed towards mothers and children, so they can mutually strengthen the approach of primary health care. Increased resources are needed to support the expansion of immunization services and to establish them as permanent elements of the health care system. The Global Advisory Group affirms the importance of setting quantified targets as a basic principle of management and endorses the principle of setting targets for the reduction of the EPI diseases at national, regional, and global levels. The primary focus for the World Health Organization (WHO) in promoting the EPI continues to be the support to national program implementation in all its aspects. The Group reviewed current EPI immunization schedules and policies and concurs in the following: for measles, for most developing countries, the available data support the current recommendations of administering a single dose of vaccine to children as early as possible after the child reaches the age of 9 months; for DPT, children in the 1st year of life should receive a series of 3 DPT doses administered at intervals of at least 1 month; for tetanus toxoid, the control of neonatal and puerperal tetanus by immunizing women of childbearing age, particularly pregnant women, is endorsed; for poliomyelitis, the Group endorses the "Outline for WHO's Research on Poliomyelitis, Polioviruses and Poliomyelitis Vaccines" prepared by the WHO Working Group convened in October 1980, i.e., for oral (live) vaccines, a 3-dose schedule, administered simultaneously with DPT vaccine, is recommended again; and for BCG concurred with the Advisory Committee on Medical Research conclusion that the use of BCG as an anti-tuberculosis measure within the EPI should be continued as at present. The implementation of programs at the national level remains the foremost priority for the EPI. National commitment, evidenced in part by the designation of a national manager, the establishment of realistic targets, and the allocation of adequate resources, is essential if programs are to succeed.
WORLD HEALTH ORGANIZATION TECHNICAL REPORT SERIES. 1980; (651):1-19.This document reports the discussions of a Scientific Group on Vaccination Against Tuberculosis, cosponsored by the Indian Council of Medical Research and the World Health Organization (WHO), that met in 1980. The objectives of the meeting were to review research on Bacillus Calmete-Guerin (BCG) vaccination, assess the present state of knowledge, and determine how to advance this knowledge. Particular emphasis is placed in this document on the trial of BCG vaccines in South India. In this trial, the tuberculin sensitivity induced by BCG vaccination was highly satisfactory at 2 1/2 months but had waned sharply by 2 1/2 years and the 7 1/2-year follow up revealed a high incidence of tuberculous infection in the study population. It is suggested that the protective effect of BCG may depend on epidemiologic, environmental, and immunologic factors affecting both the host and the infective agent. Studies to test certain hypotheses (e.g., the immune response of the study population was unusual, the vaccines were inadequate, the south Indian variant of M tuberculosis acted as an attenuating immunizing agent, and mycobacteria other than M tuberculosis may have partially immunized the study population) are recommended. A detailed analysis should be made when results from the 10-year follow up of the south Indian study population are available.
Report of the First Meeting of the Scientific Working Group on Bacterial Enteric Infections: Microbiology, Epidemiology, Immunology, and Vaccine Development, Geneva, April 1980.
Geneva, Switzerland, WHO, 1980. 17 p.The group developed a five year research plan (1980-84). Topics were given priority based on the following group-established criteria: 1) the extent of the problem to be studied; 2) the chance of its early success given the limited funds available; and 3) the availability of good research workers with an interest in the problem. The epidemiology and microbiology of Vibrio cholerae 01 and Enterotoxigenic Escherichia coli (ETEC) are given first priority for study, as are immunology and vaccine development against cholera and ETEC diarrhoea. The immunology study will involve: 1) identification of protective antigens, 2) tests for antibody measurement and 3) measurement of acquired immunity. Methods of stimulating mucosal immunity are given first priority, as is the testing of existing candidate cholera vaccines such as B-subunit cholera vaccine and living vaccines made from non-toxigenic V. cholerae. Other organisms which will be studied are Campylobaster jejuni (which can account for up to 15% of acute diarrhoea cases in some settings), Salmonella, (including S. typhi), Shigella and Yersinia enterocolitica. Once there is a better understanding of the modes of transmission of the bacterial enteric pathogens, a study of specific cost effective methods of interrupting their transmission through environmental intervention is suggested, with emphasis on modifications in water supply and water usage, defecation practices, and personal and domestic hygiene. Identification of institutions to undertake research, and funding distribution, were also considered.