Omicron Variant: Can You Have A False Negative COVID Test? – MsnNOW

Americans are set to celebrate the July 4 holiday on Monday — and Covid's BA.5 omicron subvariant could be an unwelcome guest at parties across the country.The new subvariant is already rapidly circulating: During the week ending on June 25, BA.5 accounted for 36.6% of the country's reported Covid cases,...

The growing dominance of two new ultra-contagious Omicron subvariants is prolonging a wave of coronavirus cases in California and sparking growing concerns from health officials that coming weeks could see significant spread and increased hospitalizations.BA.4 and BA.5 are now believed to be responsible for most new infections nationwide. The strains...

Wales has seen a sharp rise in its Covid infection rate, which is likely to have been driven by the Omicron variants BA.4 and BA.5, new data has revealed. The latest update from the Office for National Statistics (ONS) shows that one in 30 people in Wales, around 3.35% of...

By Michael ErmanNEW YORK, June 25 (Reuters) - Pfizer Inc and BioNTech SE said on Saturday that a booster dose of updated versions of their COVID-19 vaccine, modified specifically to combat the Omicron coronavirus variant, generated a higher immune response against that variant.Advisors to the U.S. Food and Drug Administration...

People vaccinated against COVID-19 and who recovered from an Omicron infection are best protected against the BA.5 subvariant that has been spreading, according to new findings by an Israeli hospital. Initial results of research by Sheba Medical Center showed those who were vaccinated and had been sick with Omicron developed...

In a recent study posted to the medRxiv* preprint server, researchers evaluated Pfizer-BioNTech’s BNT162b2 vaccine effectiveness (VE) after two and three doses against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs) such as Delta and in Canadian adolescent community residents. Study: Effectiveness of Pfizer-BioNTech’s BNT162b2 vaccine against...