Scientist observing Aedes aegypti mosquitoes, Bangkok, Thailand, 2005
Scientist observing Aedes aegypti mosquitoes in Bangkok, Thailand in 2005. This species is a vector (carrier) of several diseases, including dengue fever, chikungunya, Zika fever, Mayaro and yellow fever. Females can transmit the pathogens responsible for these diseases when they feed on mammalian blood. They are found in tropical, sub-tropical and temperate regions worldwide.