"As these viruses continue to evolve, public health officials watch carefully to see whether new strains will be more easily ...

A new COVID-19 variant is climbing the ranks in the United States, becoming the third-most common strain of the summer. Variant XFG, colloquially known as "Stratus," was first detected in Southeast ...

Add Yahoo as a preferred source to see more of our stories on Google. (NewsNation) — As the weather begins to change and respiratory illnesses become more common, a highly transmissible strain of ...

COVID-19 cases were relatively low across the country for most of the summer, but they’re now creeping up again. Data shows that this is thanks to the new COVID-19 variant XFG, nicknamed Stratus, ...

A new COVID-19 variant sweeping through China has yet to make a sizable footprint in the U.S., the Centers for Disease Control and Prevention (CDC) says. In January, a new COVID-19 variant known as NB ...

The first known meta-analysis of how SARS-CoV-2 variant type and time since infection influence long-COVID symptoms ties Omicron to brain fog and paresthesia (numbness and tingling), while earlier ...

As summer comes to an end, COVID-19 cases are on the rise again in California. While respiratory viruses usually peak in the winter, the novel coronavirus can also surge in the warmer months.

As the weather cools and fall approaches, COVID-19 cases are still spiking in much of the United States. The country has yet to emerge from a late summer COVID wave driven by the highly contagious new ...