Great explainer from @ashishkjha, expanding on what @michaelmina_lab and others have been saying.

No public health intervention is perfect or achieves 100% compliance. But when applied in combination across a population, they can have a major impact on virus transmission. 1/ https://twitter.com/ashishkjha/status/1289184448844427264

The focus on false positives in rapid diagnostics reflects a "medical" bias (we don't want to miss anyone) instead of a public health focus (just help me find more cases). Not to mention they provide data in a relevant, actionable timeframe rather than 7-10 days. 2/

In this case, perfect *is* the enemy of the good. It applies to testing, masks, distancing, everything.

We can do a much better job of explaining the benefit of layered imperfect measures to the general public. @nataliexdean has talked about this... 3/

https://twitter.com/nataliexdean/status/1285583183686361089?s=20,

...and the swiss cheese analogy can help, illustrated nicely by @umichsph. 4/ https://twitter.com/umichsph/status/1270739842503229443?s=20

Big correction to the above - meant the focus on false negatives, not false positives! 5/