Why wasn’t a test-only strategy sufficient for preventing transmission of COVID-19 in the White House?

Testing and Contact Tracing

A: Testing individuals for COVID-19, while a necessary component of our public health strategy, doesn’t 100% prevent those who are infected with SARS-CoV-2 from transmitting the infection to others BEFORE they test positive. The type of testing strategy used by the White House was to screen individuals for COVID-19 using a rapid antigen-based test (i.e.,

Can I wear a face shield by itself?

Masks

A: NOPE. No face shield by itself. As we’ve previously covered, use of face shields by themselves is not recommended. A previous experimental study evaluated how well face shields protected the wearer, showing that smaller inbound particles can easily flow around the shield. Now in a new pre-print (not yet peer-reviewed) by scientists from the