Mosquitoes test positive for West Nile virus in Maryland

Health officials in Maryland have issued a warning after mosquitoes tested positive for West Nile virus. The infected mosquitoes were trapped in two parts of Anne Arundel County on July 11, authorities said, and some were also found in the Bowie area of Prince George’s County. FOX 5's Josh Rosenthal spoke to Johns Hopkins University senior scholar and physician Dr. Amesh Adalja about the pesky insects.