Environmental health hazards Learn how to deal with extreme weather and other hazards that could affect your health. Zika virus Information about Zika in Philadelphia, and how the City is working to prevent the emergence and spread of the disease. Air quality Resources you can use to find current air quality information for Philadelphia. Lead exposure Information for Philadelphians about lead safety. Extreme weather Get relief from extreme hot or cold weather. Get your child tested for lead Information for parents and caregivers about how to get their child tested for lead poisoning. Protect yourself from West Nile virus and Lyme disease Learn how to protect yourself from West Nile virus and Lyme disease. Coronavirus Disease 2019 (COVID-19) Text COVIDPHL to 888-777 to receive updates to your phone. Call our helpline 24/7 to speak with a health care professional: 1-800-722-7112.