Mosquitoes gathered over a creek in Cleveland Park this morning, as people walked on a nearby path.
Health officials warn those mosquitoes could be carriers of the West Nile Virus. They recently collected samples from North Cleveland Park and the Woodley Park-Adams Morgan area.
Walker Robert Clark says he's not worried, but keeps an eye out. "I wear a lot of bug protection. I'm watching things, that's all of the precautions I'm taking," says Clark.
Health officials say older people and people with compromised immune systems are most susceptible to the virus. They advise people to wear long-sleeved shirts, pants, and bug repellant at dusk and dawn.