UNAIDS and the World Health Organization (WHO) disputed a headline-making International Journal of STD & AIDS report that fingered dirty hospital needles—not hetero sex—for two-thirds of African HIV cases. Weird science: The study is based on pre-1988 data. Abstinence ayatollahs in the U.S. Senate seized on it to argue that overseas prevention should skip condoms. WHO countered that needles now account for only 2.5 percent of African AIDS.