Get ready to learn more Greek letters. Scientists warn that omicron’s whirlwind advance practically ensures it won’t be the last version of the coronavirus to worry the world. Every infection provides ...

As Covid cases rise in more than half of the United States, concerns about troubling new variants loom. "States are seeing a growing proportion of their Covid-19 cases attributed to variants," Centers ...

The makers of COVID-19 vaccines are figuring out how to tweak their recipes against worrisome virus mutations — and regulators are looking to flu as a blueprint if and when the shots need an update.

A person with no recent travel history outside of Dane County has been found to have the worrisome COVID-19 variant first found in England late last year, becoming Wisconsin’s sixth confirmed case, ...

GENEVA — The World Health Organization is announcing a new nomenclature for the COVID-19 variants that were previously — and somewhat uncomfortably — known either by their technical letter-number ...

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