Immunity protection from vaccination or prior infection may be “leaky” or less effective in crowded settings where people are exposed to high levels of the virus that causes COVID-19, new research has found.
Category: Public Health
The CDC Works to Overhaul Lab Operations After Covid Test Flop
In early 2020, U.S. public health labs received covid-19 tests from the Centers for Disease Control and Prevention that were flawed, as a result of poor design and contamination. Now the CDC is overhauling its lab operations, but efforts to be better prepared for future threats won’t be easy, observers say.