Africa sex workers top HIV infection list, say US experts

Commercial sex workers in sub-Saharan Africa have one of the highest rates of HIV infections in the world, an international study has established.
Masked sex workers recently march through the streets to demand access to government services, in Nairobi, Kenya. Net photo.
Masked sex workers recently march through the streets to demand access to government services, in Nairobi, Kenya. Net photo.
Quartz