The COVID-19 pandemic has seen the rise and fall of many variants, but nothing like BA.5. Previous subvariants of omicron have caused cascading surges as they outcompeted each other; now, BA. 5 is the ...

In a recent study published in the journal Cell, researchers investigated the infectivity, fusogenicity, and immune evasive potential of two novel Omicron subvariants – BA.2.86 and FLip. They used ...

The alarming spread of omicron subvariants — particularly BA.5, which has quickly become the dominant coronavirus strain in the U.S. — has again put a spotlight on how well COVID-19 rapid antigen ...

You've tested negative for COVID using a rapid antigen test (RAT), but are a close contact of a positive family member and have symptoms. So you might be wondering if you're really COVID-negative or ...

The SARS-CoV-2 Omicron variant of concern (VOC) (originally named VUI-21NOV-01 by Public Health England and belonging to GISAID clade GRA(B.1.1.529+BA.*) was first reported on 8 November 2021 in South ...

Prior to the emergence of the omicron variant, frequent testing using RATs was known to be a better strategy than infrequent testing using PCR tests. RATs detect infection early, which allows for ...

In the United States, more than 82 million people have tested positive for coronavirus as of Saturday, May 14, according to Johns Hopkins University. To date, more than 999,000 people in the U.S. have ...

Another vaccine trial is underway— this time for an omicron-specific vaccine dose. “The virus can evolve very rapidly and I think the RNA approach is probably the only vaccine approach that can adapt ...

It is not well-described how the acute symptoms of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) differ by variant, vaccination, sex and age. A cross-sectional ...

SAN FRANCISCO - Doctors at a UCSF lab worked fast to confirm the first COVID omicron case in the country, pinpointing the virus to a person in San Francisco. They were able to get results within just ...