Sore throats and runny noses are increasingly common in vaccinated people with Omicron. But Omicron patients report fewer instances of fever, cough, and loss of taste or smell . Almost as soon as Omicron started spreading, doctors noticed slight differences in their...

Does Omicron cause less damage in the lungs than Delta? David Paul Morris/Bloomberg via Getty Images Animal studies and experiments involving cells cultured in the laboratory suggest that the Omicron variant may have a reduced ability to infect the lungs, compared...

This statement was updated on 29 Nove mber 2021 to correct some references and associated links Background Although the majority of COVID-19 vaccines are only approved for use in adults aged 18 years and above, an increasing number of vaccines are now also being...