Since SARS-CoV-2 first emerged in late 2019 the virus has spawned dozens of lineages, a handful of global "variants of concern" that changed the course of the pandemic.

NEW YORK (WABC) -- As the highly transmissible omicron and delta coronavirus variants continue to sweep across the United States, health officials warn that more people are expected to get infected -- ...

Pfizer and BioNTech have asked the Food and Drug Administration for emergency use authorization of their COVID-19 booster targeting omicron subvariants BA.4 and BA.5 and the original strain of the ...

Largely ignored by governments and trade unions, the SARS-CoV-2 XFG variant has, in a short time, become the dominant variant ...

NEW YORK (WABC) -- Federal regulators are considering limiting the authorization of certain monoclonal antibody treatments that have not proved effective against the omicron variant of the coronavirus ...

According to the authors, vaccine effectiveness against infection reached 44.7% (95% confidence interval [CI], 37.7% to 50.9% ...

The currently dominant COVID-19 variant in Germany has been referred to as the 'Frankenstein' variant. Here's why. View on ...

As evidence mounts that the omicron variant is less deadly than prior COVID-19 strains, one oft-cited explanation is that viruses always evolve to become less virulent over time. The problem, experts ...

Alright, Tahoe people! Remember back in spring 2022 when I, your local health journalist and intuitive, had that hunch that ...

Businesses are dealing with staffing issues, higher costs and fewer customers. Small businesses around the country are feeling the impact of the surge in new COVID-19 cases, primarily driven by the ...