Every few months for the first two years of the pandemic the public learned the name of a new coronavirus variant that had emerged and was more adept at infecting us or causing severe disease. Ten ...

With the rise of omicron came the fall of long-lasting protection from reinfection with the pandemic coronavirus SARS-CoV-2, according to a study published in Nature. Using population-wide data from ...

Research reveals a sharp decline in both the effectiveness and duration of protection from prior infection post-Omicron, underscoring the need for updated vaccines to sustain immunity Study: ...

The dominant variant of the coronavirus has proved to be not only staggeringly infectious, but an evolutionary marvel. By Carl Zimmer By November 2021, nearly two years after the coronavirus emerged ...

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 ...

You may have heard that there’s a new Omicron spinoff that’s quickly gaining ground in the United States. Maybe you wanted to ask your doctor about it or search for more information online – but what ...

The holidays spurred a new jump in COVID-19 cases and hospitalizations, coinciding with an early, severe flu season and a wave of respiratory syncytial virus or RSV — which many are dubbing a ...

A new version of omicron has taken hold in the U.S., according to the most recent data from the Centers for Disease Control and Prevention. The subvariant of omicron, named XBB.1.5, has raised ...

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.

One year after the variant’s discovery, virologists are still scrambling to keep up with Omicron’s rapid evolution. By Carl Zimmer Carl Zimmer has been writing about Omicron since it interrupted his ...

Social media users in Singapore are copy-pasting a text post which warns that the COVID-19 Omicron XBB variant, first discovered in August, is five times more “toxic” and has a higher mortality rate ...