High blood pressure among Americans was already a concern before the pandemic. Researchers now say the crisis has created greater risk for certain individuals.
If the omicron variant of the coronavirus is different enough from the original variant, it's possible that existing vaccines won't be as effective as they have been.
President Joe Biden unveiled a new set of executive actions to address the Omicron variant Thursday, though how serious the threat of the variant will be remains unclear.
Omicron is very unusual in that it is by far the most heavily mutated variant yet of SARS-CoV-2, the virus that causes COVID-19.
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The first nationwide confirmed case of the COVID-19 omicron variant has been detected in California, officials from the U.S. Centers for Disease Control and Prevention said Wednesday.
A federal court in the Western District of Louisiana has halted the Biden administration's COVID-19 vaccination mandate for millions of health care workers.
Omicron, the latest COVID-19 variant dubbed a "variant of concern" by the World Health Organization, has prompted new travel restrictions in many nations.
The World Health Organization (WHO) has announced that the B.1.1.529 lineage of Sars-CoV-2, thought to have emerged in southern Africa, is to be designated as a variant of concern (VoC) named omicron. This decision has already precipitated a broad shift in priorities in pandemic management on a global scale.