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Journal of the European Economic Association. 2012 Oct; 10(5):1025-1058.This paper estimates whether exports affect the incidence of HIV in Africa. This relationship has implications for HIV prevention policy as well as for the consequences of trade increases in Africa. I estimate this impact using two sources of data on HIV incidence, one generated based on UNAIDS estimates and the other based on observed HIV mortality. These data are combined with data on export value and volume. I find a fairly consistent positive relationship between exports and new HIV infections: doubling exports leads to a 10%-70% increase in new HIV infections. Consistent with theory, this relationship is larger in areas with higher baseline HIV prevalence. I interpret the result as suggesting that increased exports increase the movement of people (trucking), which increases sexual contacts. Consistent with this interpretation, the effect is larger for export growth than for income growth per se and is larger in areas with more extensive road networks.
Journal of Viral Hepatitis. 2003 May; 10(3):157-158.Though a potent vaccine represents a powerful preventive tool, the policy of its use is governed by epidemiological and economical factors. Hepatitis A, an enterically trasmitted disease shows distinct association with socio-economic status, populations with improvement experiencing lower exposure to the virus. With the availability of vaccine, it is pertinent to consider its use in the effective control of the disease. However, with the varied epidemiological patterns and economical constraints in different countries it does not seem to be possible to evolve universal policy for immunization. Though, universal immunization may be the most effective way of control, the same is not practical for many countries. It is proposed that irrespective of endemicity of hepatitis A, high-risk groups such as travelers to endemic areas, patients suffering from chronic liver diseases, HBV and HCV carriers, tribal communities with high HBV carrier rates, food handlers, sewage workers, recipients of blood products, troops, and children from day-care centers should be immunized with hepatitis A vaccine. In addition, for populations with intermediate prevalence, infants, children from affordable families may be immunized. As coupling the vaccine with EPI schedule would be beneficial, use of combined A & B or A, B & E vaccine may be an attractive alternative. (author's)