As South Korea battled a spike in flu cases, misinformation swirled online that the country was suffering a resurgence of the ...

Faster post-COVID-19 recovery is observed after infection with the Omicron vs earlier variants, regardless of vaccination status.

The strong performance of RV-1730 as a heterologous booster and the broad-spectrum activity of the bivalent RV-1731 vaccine underscore their potential as versatile and effective vaccination strategies ...

Japan began administering new COVID-19 shots on Sept. 20 that target the Omicron variant to prepare for a possible surge in infections this winter. Those 60 and older, along with medical workers ...

Recent research paper by Fernando C. Barros and colleagues from the INTERCOVID-2022 study focused on the impact of COVID-19 ...

The XEC COVID-19 variant, first identified in Europe, now accounts for 45 percent of cases in the United States, according to the Centers for Disease Control and Prevention (CDC). As infections tick ...

A study suggests that catching COVID-19 significantly raises the risk of developing ME/CFS (formerly called "chronic fatigue ...

The COVID-19 vaccine confers protection against the development of post-COVID-19 conditions, particularly during the Delta and Omicron eras.

Genetic changes called mutations happen as viruses make copies of themselves, and this virus has proven to be no different. Scientists named these variants after Greek letters: alpha, beta, gamma, ...

And this virus has proven to be no different. Scientists named these variants after Greek letters: alpha, beta, gamma, delta and omicron. Delta, which became dominant in the U.S. in June 2021 ...