Safety Information & Alerts


As the transition into spring and summer is underway, please be aware that the Chester County Health Department (CCHD) will once again be monitoring mosquito populations across Chester County for presence of West Nile Virus (WNV) starting May 1st. 2023.  CCHD utilizes a variety of sampling methods to monitor mosquito populations and WNV activity. Click Here to learn more about the traps designed to capture adult mosquitos, as well as the collection of larval mosquitos. 

We are closely monitoring the Coronavirus in Chester County for more information please visit:

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