Unvaccinated individuals 6 months through 4 years can receive three doses of the updated Pfizer COVID vaccine or two doses of the updated Moderna COVID vaccine. The boosters target the XBB.1.5 Omicron subvariant. That’s no longer the dominant variant circulating, but those that are spreading ...
The new shots are similar to previously approved formulas but were updated to target the XBB variants — strains of the virus descended from the original Omicron variant — which became dominant last winter. Newer descendant strains have since emerged, though vaccine makers have announced early fin...
世界卫生组织于2023年7月19日将EG.5列入监测变异株名单中,但该变种于2023年2月首次被发现。Pekosz博士对此表示:“科学家已经开始研究这个变种,此变种在其他国家也存在。”截至目前,已有51个国家报告发现EG.5。 不过,世界卫生组织认为EG.5...
BA.5 has been driving a surge of new infections globally and has shown to be particularly good at evading the immune protection afforded either by vaccination or prior infection. Omicron subvariant BA.4 was estimated to make up 12.9% of the circulating variants in the United States...
Mu (B.1.621).Experts first spotted this COVID-19 variant (pronounced "myoo") in Colombia in January 2021. Since then, countries in South America and Europe have reported outbreaks of Mu. In the U.S., the CDC says Mu reached a peak in June 2021, when it made up less than 5% of ...
Mu (B.1.621).Experts first spotted this COVID-19 variant (pronounced "myoo") in Colombia in January 2021. Since then, countries in South America and Europe have reported outbreaks of Mu. In the U.S., the CDC says Mu reached a peak in June 2021, when it made up less than 5% of ...
Basic reproduction number (R₀): 2-6 (varies by variant) Serial interval: 5-7 days Incubation period: 2-14 days (average 5-6 days) Viral shedding : Begins 1-3 days before symptom onset Presymptomatic transmission: Significant driver of spread Superspreading events: Disproportionate contribution...
CDC https://covid.cdc.gov/covid-data-tracker/#variant-proportions (2023). Yamasoba, D. et al. Virological characteristics of the SARS-CoV-2 omicron XBB.1.16 variant. Lancet Infect. Dis. 23, 655–656 (2023). Article CAS PubMed PubMed Central Google Scholar Link-Gelles, R. et al. ...
New Omicron subvariant XBB.1.5 is estimated to account for 40.5 percent of COVID-19 cases in the United States in the week ending December 31 of 2022, nearly doubling from the previous week, according to data updated Friday by the U.S. Centers for Disease Control and Prevention (CDC). ...
New subvariant causing 20% of new COVID-19 cases, CDC says Updated: Dec. 21, 2023 at 5:00 AM GMT+8 | ByCNN Newsource The CDC reported subvariant JN.1 is now causing about 20% of new COVID-19 infections across the country. ...