 For more, go to WFMD.com. The Frederick County Health Department said it's vaccinated 150 animals for rabies so far this year. These vaccinations took place on Sunday, June 30th at the Old National Pike Park in Mount Airy. Health officials say it's important for residents to have their pets vaccinated against rabies. As of July 1st, the health department said 25 animals tested positive for rabies in Frederick County in 2024.