Ongoing study says pandemic-related stress and increased period poverty has led girls to engage in transactional sex, putting them at risk of infection.
Dr Paula Kahumbu becomes the first Kenyan to sit on the board.
About 80 percent of forest loss is linked to agricultural activities, professor says.
Countries in the region battle high commodity prices following weather-induced food supply deficits.
Data from UNAids, the UN body says, shows women made up 65 per cent of new infections in Sub-Saharan Africa and 52 per cent in the Caribbean.