Zimbabwe: Crisis 'driving HIV decline'

Fewer Zimbabweans are getting infected with AIDS, and researchers speculate it's due in part to a battered economy that's leaving men short of money to be sugar daddies and keep mistresses. Presenting a study of the infection rate among pregnant women at a major international AIDS conference in South Africa this week, Dr. Michael Silverman said the prevalence of the virus that causes AIDS fell from 23 percent in 2001 to 11 percent at the end of 2008.