Over 125 mosquito species have documented resistance to one or more insecticides.
A more likely explanation is that deforestation caused a change in mosquito species.
Canadian studies show that it gave nearly 100 percent protection from some mosquito species for more than three hours.
This year, all 50 states are warning of an outbreak from any of the 30 mosquito species known to carry it.
Each year, more mosquito species are found to carry the virus.
Despite their efforts, 20% of the mosquito species that carry the virus in the county are infected.
For most mosquito species, that is less than a week.
Given a choice, the females of almost every mosquito species studied greatly preferred their blood to ours.
Like other mosquito species, only the females require a blood meal to develop their eggs.
He did this by showing that certain mosquito species transmit malaria to birds.