Trump's 'perfect' cognitive test isn't what it seems: The medical memo tells a different story

Donald Trump's latest boast that he scored 'perfectly' on a cognitive test has dominated reaction to his annual medical ...
The Conversation

Coronavirus tests are pretty accurate, but far from perfect

Widespread testing for the SARS-CoV-2 virus is important to both slow the virus and gain information about how widespread it is in the U.S. But a second aspect of testing has gotten less attention: ...