I now know a little more about serological testing and antibodies. But I still have questions. For example, I read about antibody studies in California that say as many as 4% of all people have had the coronavirus. What does this mean?

Testing and Contact Tracing

A: The short answer, as statistician Thomas Lumley says, is that “counting rare things is hard.” There is much we still don’t know about antibody testing for COVID-19 (levels of detection, interpretation, length/duration/extent of immunity). One issue is the testing itself. While current active illness tests (swab/PCR) are very accurate when performed correctly and at Read more…

I need to make an essential trip on public transportation. How do I stay safe?

Staying Safe Travel

A: Cover your face; use a disposable tissue to touch shared surfaces; immediately sanitize/wash hands after riding. Business Insider provides more helpful, evidence-based transit (public and otherwise) tips in this article. It ranks transportation from “most” to “least” risky (the former: cruise ships; the latter: traveling alone by car), and provides guidance on how to Read more…

Can’t I please just visit just one friend?

Socializing

Great explainer and data visualization from some top notch social network scientists: “Humans are social animals, and reducing connectivity in social networks is hard. Every additional connection that we can postpone until COVID-19 is under control has the potential to save one or more lives. Yes, every one. You may never know whether it made Read more…