Antigua and Barbuda has year-round mosquito activity, with peak risk during the wet season from August through November. The islands are relatively low-lying and dry compared to other Caribbean islands, which limits but does not eliminate mosquito breeding. Areas with poor drainage and standing water after rainfall carry the highest risk.
Dengue fever is the primary concern, with low-level activity. The islands have no malaria transmission. The relatively drier climate compared to wetter Caribbean islands means overall mosquito density is somewhat lower.
Aedes aegypti is the dominant vector, concentrated around residential and commercial areas where artificial water containers provide breeding habitat.
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Explore mosquito risk briefings for other destinations in Central America & Caribbean.
Disease presence data is sourced from WHO, CDC, ECDC, and OpenDengue. This is not medical advice — consult a travel health professional before your trip.