A new study analyzing the immune response to COVID-19 in a Catalan cohort of health workers sheds light on an important ...

While some have mild symptoms with COVID-19, others can have severe symptoms, resulting in hospitalization and even death.

• Adam Beard of Berthoud; Izabella Miller, Gavin Molinar, Tucker Peterson and Cooper Walton of Johnstown; and Aubree Heinsma, Macy Kleve and Allison Sanger of Windsor were named to the president’s ...

Vaccination linked to lower risk for hospitalization, critical care unit admission, preterm birth during delta and omicron periods ...

A new investigation published in JAMA examines how COVID-19 vaccination affects maternal and perinatal outcomes among ...

Pregnant people who received a COVID-19 vaccine were far less likely to experience severe illness or deliver their babies prematurely, according to a major new UBC-led study published in JAMA.

The BA.2.75 sublineage of the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may escape neutralizing antibodies. The BA.2.75 sublineage (primarily the BA.2 ...

Manal Mohammed is a senior lecturer of medical microbiology at the University of Westminster. Since the COVID variant Omicron emerged in late 2021, it has rapidly evolved into multiple subvariants.

It’s one of the perplexing mysteries of the Covid pandemic: Where did Omicron emerge from, almost one year ago? The fast-moving, extremely contagious variant arrived just after Thanksgiving 2021, ...

Scientists say there is no evidence that the BA.5 version of the Omicron coronavirus variant is more transmissible than measles, or that it has a basic reproduction number, or "R-naught" (R0), of 18.6 ...

A new version of omicron is dominant in the U.S. The coronavirus subvariant known as BA.5 accounted for nearly 54% of the country's Covid cases as of Saturday, according to the Centers for Disease ...