US to lift most federal COVID-19 vaccine mandates next week

Pfizer, left, and Moderna bivalent COVID-19 vaccines are readied for use at a clinic, Nov. 17, 2022, in Richmond, Va. The Biden administration will end most of the last remaining…

Gut bacteria could be behind weaker immune responses to COVID-19 vaccine

High activity of fucose digestion by bacteria in the gut is associated with higher expression of two AP-1 transcription factors, FOS and ATF3 in blood immune cells, and with a…