Since the first case of the coronavirus was identified in Pennsylvania on March 6, we’ve been tracking its spread. These numbers tell only part of the story. Tests are still not widely available, and you can have the virus — and transmit it — without feeling sick. The numbers shown here represent known cases. Because of limited testing, undiagnosed cases are probably widespread.
Developers: Garland Potts and Dain Saint, Philadelphia Inquirer, and Daniel Simmons-Ritchie, Spotlight PA.
Graphics: John Duchneskie, Dylan Purcell and Dominique DeMoe, Philadelphia Inquirer, and Daniel Simmons-Ritchie, Spotlight PA.
Editors: Jessica Parks, Philadelphia Inquirer, and Chris Baxter, Spotlight PA.