June 2001 Cover
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Researchers at John Hopkins have concluded that the HIV virus in Africa is no more virulent than the one found in Europe and North America.
Subtypes A, C and D are more common in eastern and sub-Saharan Africa, while subtype B is more prevalent in the United States, and subtypes B and E are found more often in Thailand. Based on a calculation of
the probability of HIV transmission per sexual act among monogamous couples in Uganda, the researchers found that infectivity was the same for most subtypes of the virus. They attribute the faster spread of HIV in Africa to
political disruption, uncontrolled sexual activity including rape, social upheaval, cultural practices, migrant workers and the sex industry.
Editor's Note: from Reuters
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