They can bite more than once, each time depositing a new clutch of potential bloodsuckers in dry areas that will flood in the spring. The second wave of the annual mosquito attack probably will start next week, Walker said. That's when the adult summer floodwater mosquitoes begin to emerge. Summer mosquitoes also lay eggs in dry places that will become flooded. They have a much shorter life cycle, however, going from egg to adult within about two weeks.
Mosquitoes are notorious carriers of disease.
They spread encephalitis, which affects horses and rarely humans, and canine heartworm. The virus caught public health officials off guard in 1999 in New York. There are other problems associated with mosquito bites, including allergic reactions and secondary infections from excessive scratching, Walker said. He suggests homeowners inspect their property for standing water and that they use repellents when necessary.