Niger has highly seasonal mosquito activity concentrated during the short rainy season from June through September. The southern agricultural belt carries the highest malaria burden, while the Saharan north has minimal risk. The Niger River valley and areas around Niamey are significant transmission zones.
Malaria (P. falciparum and P. vivax) is the primary concern, with intense seasonal epidemics. Yellow fever is endemic in the south. The very short rainy season creates a concentrated period of extreme risk followed by a long dry season with minimal mosquito activity.
Anopheles gambiae is the dominant malaria vector during the rains. Aedes aegypti transmits yellow fever. The arid Sahelian climate naturally limits mosquito breeding to the wet months and southern zones.
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Explore mosquito risk briefings for other destinations in West Africa.
Disease presence data is sourced from WHO, CDC, ECDC, and OpenDengue. This is not medical advice — consult a travel health professional before your trip.