Mozzwise Briefing

Guinea-Bissau has peak mosquito activity during the rainy season from June through November. The entire country carries malaria risk, with the low-lying coastal areas and the Bijagos archipelago being particularly affected. The mangrove zones provide extensive breeding habitat.

Malaria (P. falciparum and P. vivax) is the primary concern and a leading cause of death. Yellow fever is endemic. Limited healthcare access throughout the country makes prevention critical.

Anopheles gambiae is the dominant malaria vector. Aedes aegypti transmits yellow fever. The low-lying, swampy terrain and tropical West African climate maintain high mosquito density during the wet season.