The numbers of mosquitos most responsible for the transmission of West Nile virus to humans in Minnesota is among the highest ever recorded in the seven-county metro area, according to a recent update.

West Nile Virus has been detected for a third time in a local county. Greene County Public Health said, due to a third positive test for West Nile Virus, they will be spraying for mosquito control. The treatment will take place on July 28, starting at 9 p.m. until 7 a.m. on July 29.

Mosquitoes that test positive for West Nile virus can be found all across the U.S. Is there a vaccine for West Nile virus available in the U.S. yet?