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Drug injection is one way in which human immunodeficiency virus is transmitted. Health programmes should take into account epidemiological differences between more experienced and new drug injectors.
Pressure is mounting to relax the regulations on importation of chimpanzees for research. Such a policy is unnecessary and would deepen the plight of an already endangered species.
Researchers and public health officials involved in surveying and forecasting the course of the HIV epidemic require complete and unfiltered information from many sources. Governments should respond by establishing national HIV databases.
A number of problems still surround infection by the human immunodeficiency virus and the pathogenesis of AIDS. Solutions to the problems would provide valuable information for the development of antiviral therapy and a vaccine.
Epidemiological data on the main determinants of the transmission potential of HIV-1 in specific at risk groups is slowly accumulating, but many uncertainties remain.
