We study the long-term determinants of the high rates of HIV infection in sub-Saharan Africa, particularly among women … polygyny is likely to affect HIV infection by focusing on sexual behavior, as captured by the intensity of sexual activity and … larger demographic shock men (but not women) display a more intense sexual activity, while women (but not men) are more …

that race does affect COVID-19 outcomes. The data confirm that in Cook County blacks are overrepresented in terms of COVID …