Chad has highly seasonal mosquito activity, concentrated during the rainy season from June through October. The southern provinces and the Logone and Chari river basins carry the highest malaria burden. The Saharan north has minimal mosquito activity. NDjamena experiences significant urban transmission during the rains.
Malaria (P. falciparum and P. vivax) is the primary concern, with intense seasonal transmission. Yellow fever is endemic in the south. The Sahel-to-Sahara climate gradient creates a sharp contrast between the malaria-endemic south and the arid, lower-risk north.
Anopheles gambiae is the dominant malaria vector in the south. The short rainy season concentrates transmission into a few months, creating intense seasonal peaks followed by a long dry period.
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Explore mosquito risk briefings for other destinations in Central 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.