In Singapore, the virus is transmitted to humans mainly by the female Aedes aegypti mosquito, an urban-dwelling pest that lays its eggs in stagnant water.
The aedes aegypti mosquito appeared in Argentina in 1986 and is now being found in 36 percent of homes in Buenos Aires province, according to Dr. Alfredo Seijo of the Hospital Munoz.
An IAS that poses a direct threat to human health is the Asian tiger mosquito (Aedes albopictus), which has been linked to the transmission of more than 20 human pathogens, including yellow fever and dengue.