By the numbers

Coronavirus around Philly: Tracking the spread

Updated March 18, 2020, 4:00 p.m.
Source: State, county and city health departments

Since the first case of coronavirus was identified here 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 actual spread of the virus may be slower than it appears because, experts say, it was spreading before official reporting started.

We’re making our most critical public health and safety coverage of the coronavirus pandemic free to all. But we need your support to continue this essential public service to the Philadelphia region. Please subscribe or donate today.
Editor’s note: News about the coronavirus is changing quickly. The latest information can be found at