A recently published study in the online journal PLoS Medicine revealed startling findings about the AIDS epidemic in Zimbabwe. In recent years, “HIV prevalence has declined in Zimbabwe by approximately 50%.” HIV is the virus that causes AIDS. The primary reason it has declined is not condom use, as many public health experts appear to wish, but rather fewer sexual partners. In fact, the study authors cite better education and more intact marriages as the key to reduced promiscuity.