Omicron is sweeping away the delta variant, having impacts on hospitalization and population immunity.
The omicron variant of SARS-CoV-2 may be less efficient at infiltrating the lungs and spreading from cell to cell, early lab studies suggest.
Yet-to-be-reviewed research suggests the coronavirus infects fat cells and certain immune cells in fat.
On Nov. 26, the World Health Organization (WHO) named a new coronavirus variant "Omicron" and designated it as a "variant of concern."
On Friday (Nov. 19), The Food and Drug Administration (FDA) authorized Moderna and Pfizer boosters for all adults, prior to the busy holiday season.
California and Colorado expanded booster shot eligibility to all adults who received their second dose of Moderna's or Pfizer's COVID-19 vaccine at least six months ago.
A new COVID-19 pill significantly cuts risk of hospitalization or death when taken within three days of symptom onset, Pfizer says.
The FDA panel concluded that the benefits of Pfizer's COVID-19 vaccine for young children outweigh the risks.
A woman who survived cancer was infected with the novel coronavirus for nearly a year, in the longest-ever reported case of COVID-19, according to a new study.
Many people will now be able to "mix and match" COVID-19 booster shots — that is, get a different COVID-19 vaccine for a booster, the FDA announced Wednesday (Oct. 20).
An advisory committee voted unanimously on Thursday (Oct. 14) to recommend a Moderna COVID-19 vaccine booster for certain groups of people.