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Ómicron

Meet ‘Centaurus,’ the new ‘stealth Omicron.’ It was just found in the U.S. and may escape immunity more than any other COVID strain

A new Omicron subvariant on the radar of the World Health Organization—one some experts say could be the most immune-evasive yet—has been identified in the U.S., the Centers for Disease Control and Prevention told Fortune on Thursday. There have been two cases of BA.2.75, dubbed “Centaurus,” detected in the U.S., with the […]

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Duration of Shedding of Culturable Virus in SARS-CoV-2 Omicron (BA.1) Infection

The B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has a shorter incubation period and a higher transmission rate than previous variants.1,2 Recently, the Centers for Disease Control and Prevention recommended shortening the strict isolation period for infected persons in non–health care settings from 10 days to 5 […]

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Coronavirus (COVID-19) Update: FDA Recommends Inclusion of Omicron BA.4/5 Component for COVID-19 Vaccine Booster Doses

On Tuesday, the U.S. Food and Drug Administration’s independent experts on the Vaccines and Related Biological Products Advisory Committee met to publicly discuss whether a change to the current vaccine strain composition of COVID-19 vaccines for booster doses is necessary for the 2022 fall and winter seasons. The COVID-19 vaccines […]

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BNT162b2 Vaccine Effectiveness against Omicron in Children 5 to 11 Years of Age

Abstract BACKGROUND Limited evidence is available on the real-world effectiveness of the BNT162b2 vaccine against coronavirus disease 2019 (Covid-19) and specifically against infection with the omicron variant among children 5 to 11 years of age. METHODS Using data from the largest health care organization in Israel, we identified a cohort […]

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Omicron Breakthrough Cases Boost Protection, Studies Say

Vaccinated people who have a breakthrough case of Omicron will have better protection against COVID-19 variants than vaccinated people who receive a booster shot, two new studies show. The University of Washington, working with Vir Biotechnology of San Francisco, looked at blood samples of vaccinated people who had breakthrough cases of […]

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