What does airborne transmission mean?Scientists distinguish between respiratory infectious diseases classed as “airborne”—which spread by aerosols suspended in the air—and infections that spread…
An unvaccinated worker infected with a COVID variant sparked an outbreak at a US nursing home where nearly all the residents had been inoculated, said a […]
After an international mission to China turned up more questions than answers about the pandemic origins, the WHO is evaluating how to move forward through a […]