But there is still reason to be cautious. The highly transmissible and contagious BA.2 Omicron subvariant—dubbed “stealth” Omicron—is now the dominant strain in the United States, causing more than 85 ...

Pirola appears to have descended from the Omicron BA.2 sub-lineage, which generated surges of the virus globally in 2022. There is more population immunity now than there was in 2020 at the outset ...

COVID levels in the U.S. remain high, according to wastewater detections, which is a retreat from the CDC’s label of “very ...

In the latest developments on the BA.2.86 Omicron SARS-CoV-2 subvariant, a few more sequences and wastewater findings were detected in the United States in Europe, according to scientists tracking the ...

An easily spread sub-variant of Omicron, called BA.2, is now causing most cases. Recent easing of restrictions and waning immunity from the vaccines could be factors behind the rise too.

JN.1 descended from BA.2.86, which is a sublineage of the omicron BA.2 variant, TODAY.com previously reported — that's what sets JN.1 and BA.2.86 apart from the other prevailing variants like HV.

Why it’s important: Information from Europe and U.S. wastewater surveillance “indicate that we are very likely to begin seeing an increase in COVID-19 cases within the next few weeks as the BA.2 ...

The complex and ever-evolving immunity landscape associated with SARS-CoV-2, combined with immune evasion by omicron ...

The World Health Organization (WHO) last week reclassified the Omicron BA.2.86 variant—and its offshoots, including JN.1—as a variant of interest as global proportions grow, including in the United ...

4-5? COMIRNATY Original/Omicron BA.4-5 is a vaccine given to prevent coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in individuals 6 ...

KP.3 was the 'predominant' SARS-CoV-2 variant in the US. It was also spreading in Europe. It's now joined with another ...

The XEC variant is a hybrid of the BA.1 and BA.2 strains of the Omicron variant and it is feared it could soon become the ...