Researchers have discovered a mechanism that may explain why people with COVID-19 lose their sense of smell.
Jumps between species provide ample opportunity for virus to change, says Benjamin tenOever.
Quotable quotes heard by MedPage Today reporters.
Infectiousness may linger beyond the 5-day isolation period recommended by the CDC
COVID-19 vaccines delivered as nasal sprays rather than injections are in development by at least nine labs and companies around the world, according to the World Health Organization.
Early data support saliva testing, but it might be too early to tell.