Only 2 of the 7 omicron waves peaked in the flu season (see graph above). Although further declines are likely, it is possible a large-scale change in the virus could emerge—as we've seen with delta ...

SARS-CoV-2, the virus responsible for COVID-19, infects cells by binding its spike protein to angiotensin-converting enzyme 2 ...

For some, the symptoms never went away. The omicron relative now dominant in the U.S. is called XEC, which accounted for 45% of variants circulating nationally in the two-week period ending Dec ...

As 2022 began, New York State reported its highest single day new case total with 114,802 cases as the Delta and Omicron variants ripped through the country.

In this phase, more transmissible variants, such as alpha and delta, emerged. In contrast, during the omicron era, prior infections and vaccinations generated widespread immunity that pressured ...

Everything you need to know and stay informed about COVID-19, the novel coronavirus, and its many variants and subvariants, including EG.5, BA.2.86, Stealth Omicron, and Delta.