West Nile Virus detected in several states

August 16, 2012 11:59:00 AM PDT
Across the nation, most of the country is under watch for cases of the deadly West Nile virus. Health officials everywhere are urging people to use mosquito repellent. Whenever they're outdoors, because even if there is spraying in your area, it can't possibly kill all the mosquitoes.

"It is wide spread, this is the worst year ever for West Nile virus, 700 confirmed cases, estimates that 12,000 have already been sickened. It's in 43 states," said ABC News Medical Editor Dr. Richard Besser.

West Nile usually affects the elderly or unhealthy. In fact, most people never even know they have it. Dr. Besser talks about precautionary measures -- that's coming up on Good Morning America, right after this newscast at 7 a.m.