Philly’s coronavirus response

Philly’s coronavirus curves: Daily updated stats on COVID-19

How serious are infections? Is testing increasing? What’s the positivity rate? Check these charts.

Philadelphia, July 2020

Philadelphia, July 2020

Mark Henninger / Imagic Digital
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What is the currently situation with coronavirus in Philly?

Using data from the Philadelphia Department of Public Health, these two charts showing coronavirus trends in Philadelphia.

These charts will automatically refresh on a near daily basis, so bookmark this page and check back whenever you want an update. Tip: If you’re viewing on mobile, turn your phone sideways to see the full set of data.

Watching intensity: How serious are the infections?

(If you’re viewing on mobile, turn your phone sideways to see the full set of data.)

The above chart shows three numbers in proportion to one another.

The purple line shows case count, i.e. how many Philadelphians tested positive for SARS-CoV-2. The blue line show hospitalizations — how many patients checked in with coronavirus symptoms. The red line is fatalities, showing how many people died of COVID-related illness.

There can also be delays in the reported number of deaths, since not all people are diagnosed similarly and Philadelphians may be treated outside the city. Health department staff regularly does a match with various state databases to find new Philly fatalities.

The above graph uses a rolling seven-day average, not a daily-reported number, for each data point.

Capacity and infection rate: As testing increases, how many results are positive?

(If you’re viewing on mobile, turn your phone sideways to see the full set of data.)

Two different stats are shown on this chart. The green bars are total number of tests given each day, and the blue line is the percentage of tests that return positive.

The evolving relationship between these two stats makes for a useful comparison in assessing the state of the pandemic in Philly.

When COVID first arrived in the region, there were only a few test sites available and supplies were limited, so access was restricted to frontline workers and older people experiencing symptoms. Gradually capacity and supply increased, and testing was opened up to anyone who wanted it.

Those trends explain why the early part of graph above looks the way it does: back then, only a few people were getting tested, many of them had extreme symptoms. The more recent part of the graph shows that increased testing does not automatically mean an increase of cases.

Want some more? Explore other Philly’s coronavirus response stories.

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