Clúster de Colegios y asociaciones de salud
Omicron BA.5 is now the dominant COVID-19 variant in the United States.1Experts said that while this subvariant may be more capable of evading natural and vaccine-induced immunity, BA.5 symptoms are similar to those caused by earlier versions of Omicron. It is very hard to distinguish one variant from the other based […]
Omicron is mutating in giant leaps, with scientists racing to keep up. Its diversity is challenging vaccine efficacy and complicating treatment. But this fall, broad spectrum bivalent vaccines may help mitigate the seemingly never ending spread of COVID-19. In this Q&A, adapted from the June 6 episode of Public Health On Call, Stephanie […]
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 […]
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 […]
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 […]
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 […]
Créditos: Comité científico Covid
Coronavirus reinfections will likely increase throughout the summer as two Omicron subvariants — BA.4 and BA.5 — become dominant in the U.S. The subvariants appear to be escaping immunity from vaccines and previous infections — even other Omicron infections — and have been causing hundreds of thousands of new COVID-19 […]
The two newest subvariants of Omicron, BA.4 and BA.5, are spreading across the U.S. and making up a higher percentage of new cases, prompting concerns about increased transmissibility. The subvariants represent 13% of new COVID-19 cases, according to the latest CDC data, up from 7.5% the week before and 1% in […]
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 […]