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Let's look at the contact tracing metric in action:

Per best avail data, #Pennsylvania has 160 contact tracers.

There are an avg of 822 new daily cases --> we estimate they need 8,220 contact tracing staff to trace all new cases in 48 hrs, before too many others are infected.
This means that #Pennsylvania is likely able to trace only 2% of new COVID infections in 48 hours.

These low levels of tracing suggest there is either an active outbreak underway in #Pennsylvania, or almost no tracing capacity exists. Strong caution is warranted.
Experts recommend that at least 70% of contacts for each new case must be traced within 48 hours in order to contain COVID. Experts estimate that tracing each new case within 48 hours requires an average of 10 contact tracers per new case, as well as fast testing.
Our contact tracing data is sourced from testandtrace.com and NPR. Learn more: blog.covidactnow.org/modeling-metri…
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