A man walks past a signboard warning residents that the threat of HIV/AIDS is real 31 March 2001 in Lagos, Nigeria. While surveys show sex among the young is widespread and HIV/AIDS is spreading, Africa's most populous country still struggles with straight talk about sex, health workers say. HIV/AIDS prevalence rates have risen to 5,4 percent of the adult population, passing the point at which the epidemic spreads into the general population, according to the latest survey published in December 1999. The government has been criticized for doing too little to alert people to the danger of HIV/AIDS and to promote safe sex. (Photo credit should read PIUS UTOMI EKPEI/AFP via Getty Images)
