Variant NB.1.8.1 accounted for 0% of U.S. cases in April. By mid-June, it was estimated to be the cause of around 37% of cases.

The new Covid-19 variant from China, named the B. 1.8.1 strain, has been detected in six different US states and has been described as "more transmissible" by doctors with fears that mask mandates ...

The COVID-19 NB.1.8.1 variant has been linked to a high number of cases in China and Hong Kong. Earlier this month, Hong Kong authorities issued a statement urging the public — especially high ...

Global concern grows that Beijing may be too slow to report new variants to the rest of world. Which, in turn, could lead to new outbreaks. Lack of info on China's COVID-19 outbreak stirs global ...

The variant was first confirmed China this past January. Reported symptoms also include a dry cough, muscle aches, chills, congestion, and fatigue — though fever, once a hallmark of COVID-19, is ...

China has reported 1,308 new local Covid-19 cases since October 17, its highest tally of delta variant cases linked to a single outbreak. Newsletters Games Share a News Tip Featured ...

The CDC confirmed the presence of the NB.1.8.1 variant, but says there are too few cases to be included in official COVID tracking data.