Alpha (B.1.1.7) was the first of the highly publicized variants. Multiple spillovers from humans and onward transmission of SARS-CoV-2 in white-tailed deer. Richard Reithinger, an infectious disease epidemiologist at the nonprofit research institute RTI International, told Fortune on Mondaythat hes also heard such reports, but that its probably too early to tell if the viruss symptom set has truly shifted. You can review and change the way we collect information below. and Terms of Use. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. Meanwhile, delta accounted for 41% of cases during the same period. Sequential samples >12 days apart were collected from 5 seropositive cats. Thank you for taking the time to confirm your preferences. How contagious is it? Many. The omicron subvariant of COVID-19, BA.5, became one of the dominant strains of the virus in the fall of 2022 in the U.S. At that time, it was the most easily spread strain to date and is able to evade immunity from COVID infection and vaccination. Monday - Friday, 8 a.m. - 5 p.m.:[email protected], After business hours, holidays or weekends:[email protected] (ask for public information officer), 2023UC Regents. "The bottom line is, don't take your masks off just yet and get vaccinated, vaccinated, vaccinated, vaccinated and boosted," Gohil said. The most recent report shows that as of Dec. 25, 59% of all U.S. infections were caused by omicron. More information is available, Travel requirements to enter the United States are changing, starting November 8, 2021. Suggested citation for this article: Tyson GB, Jones S, Logan N, McDonald M, Marshall L, Murcia PR, et al. University of Washington School of Medicine. Your feedback is important to us. Animal SARS-CoV-2 infections originating from anthropogenic transmission can lead to onward animal-to-animal transmission, as described previously in mink (2), hamsters (3), and white-tailed deer (4). She added that at this point it is too early to tell if the XBB.1.16 strain is better at evading immunity from prior infections or vaccinations. In that regard, XBB.1.16 may not change much, if anything. This is why COVID-19 outbreaks are so hard to contain. 'Arcturus,' a COVID variant sweeping India, is now in the U.S., the CDC Even as Omicron stresses essential systems, severe illness is not inevitable, and health authorities stressed the importance of vaccination to reduce the likelihood of severe illness. Only one member of the household was fully vaccinated, and all but one member, including the traveler, had experienced confirmed infections in 2020. Severity: Delta caused more severe disease than other variants in people who werent vaccinated.
