DALLAS - Most of the country is under watch for cases of the deadly West Nile Virus.
So far this year, 43 states have reported infections in people, birds, or mosquitoes.
Almost half of the record number of cases are in Texas.
Maryland health officials reported the first case in a person last week.
Nationwide, the CDC reports 636 cases so far this year, 26 of which were fatal.
Controversial aerial spraying is set to being in and around Dallas on Thursday night. The first time they've doe that since 1996.
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 kill all the mosquitoes.