The Disease Investigation and Surveillance program works to investigate communicable disease reports, identify and respond to outbreaks of infectious diseases, and analyze data to discern disease trends in the community.
An infectious disease reports are released regularly to ensure Chester County data is accessible to the public. The monthly communicable disease report includes monthly case counts for the current year. Data for vaccine preventable illnesses, invasive diseases, enteric illnesses and animal bites are detailed. The weekly influenza and RSV report features most recent and cumulative data for Chester County and the state of Pennsylvania.