New virus h3n2

Share on Pinterest Lindsey Nicholson/UCG/Universal Images Group via Getty Images • Preliminary • Flu activity appears to be on the rise in the United States. • The influenza A strain (H3N2) appears to be making up most of the flu cases. The flu is finally starting to make a comeback after a historically quiet 2020-2021 influenza season. Though flu activity is low in much of the country, the United States is currently seeing more flu activity than it did during all of last season. The bulk of cases can be traced back to Influenza A (H3N2), a strain often associated with more severe flu seasons, according to the New Mexico is seeing high flu According to the Certain urban areas, specifically college campuses and universities, are seeing large flu outbreaks among young adults. The CDC is currently investigating a large outbreak among students at the University of Michigan in hopes of understanding risk factors for infection and the effectiveness of this year’s flu shot. According to “Likely, this age group may not be vaccinated yet or may not be as good about masking. Also, school is a big factor, as all viruses spread more in this age group,” said Everyone ages 6 months and over are advised to get the flu shot each year. “Young adults and children are common drivers of community spread of flu, and the activity we are seeing now is not unusual,” Brammer said. The CDC has also reported several large outbreaks at urban centers, like colleges and universities, Brammer said. The ...

Why subscribe? • The ultimate action-packed science and technology magazine bursting with exciting information about the universe • Subscribe today and save an extra 5% with checkout code 'LOVE5' • Engaging articles, amazing illustrations & exclusive interviews • Issues delivered straight to your door or device "From our lab-based studies it looks like a major mismatch," study coauthor Scott Hensley, a professor of microbiology at the Perelman School of Medicine at the University of Pennsylvania, told CNN. Hensley and his colleagues have been monitoring the H3N2 subtype of the influenza virus, looking out for any genetic mutations that crop up in the virus as it spreads. Through their surveillance, they recently identified a new H3N2 "clade," or a split in the virus's family tree. They named the clade "3C.2a1b.2a2," or 2a2 for short, and posted their finding on Thursday (Dec. 16) to the preprint database medRxiv. The study has not yet been peer-reviewed or published in a scientific journal, and it only measured antibody responses in 40 individuals who were mostly young and healthy. But the research hints that mutations carried by the new clade may make this year's flu vaccine less effective against H3N2, Hensley told CNN. "Studies have clearly shown that seasonal influenza vaccines consistently prevent hospitalizations and deaths even in years where there are large antigenic mismatches," the authors wrote in the preprint. So even if this year's flu shot doesn't match the d...

Buy or subscribe As the world sped towards a pandemic in early 2020, evolutionary biologist Jesse Bloom gazed into the future of SARS-CoV-2. Like many virus specialists at the time, he predicted that the new pathogen would not be eradicated. Rather, it would become endemic — the fifth coronavirus to permanently establish itself in humans, alongside four ‘seasonal’ coronaviruses that cause relatively mild colds and have been circulating in humans for decades or more. • Eguia, R. T. et al. PLoS Pathog. 17, e1009453 (2021). • Volz, E. et al. Cell 184, 64–75 (2021). • Peacock, T. P. et al. Preprint at bioRxiv • Liu, Y. et al. Preprint at bioRxiv • Kistler, K. E., Juddleston, J. & Bedford, T. Preprint at bioRxiv Related Articles • How bad is Omicron? What scientists know so far • Omicron is supercharging the COVID vaccine booster debate • Omicron-variant border bans ignore the evidence, say scientists • Closest known relatives of virus behind COVID-19 found in Laos • Did the coronavirus jump from animals to people twice? • COVID vaccine makers brace for a variant worse than Delta • How the Delta variant achieves its ultrafast spread • The coronavirus is mutating — does it matter? Subjects • • • What makes a COVID superspreader? Scientists learn more after deliberately infecting volunteers News 15 JUN 23 NIH to intensify scrutiny of foreign grant recipients in wake of COVID origins debate News 09 JUN 23 China’s rolling COVID waves could hit every six months — infecting millions ...

The Both the H2N2 and H3N2 The Hong Kong flu strain shared internal genes and the [ citation needed] The Hong Kong flu was the first known outbreak of the H3N2 strain, though there is serologic evidence of H3N2 infections in the late 19th century. The first record of the outbreak in Hong Kong appeared on 13 July 1968 in an area with a density of about 500 people per acre in an urban setting. The outbreak reached maximum intensity in two weeks, lasting six weeks in total. The virus was isolated in By July 1968, extensive outbreaks were reported in Vietnam and Fujian flu (2003–2004) [ ] Fujian flu refers to flu caused by either a Fujian human flu strain of the H3N2 subtype or a Fujian A/Fujian (H3N2) human flu (from A/Fujian/411/2002(H3N2)-like flu virus strains) caused an unusually severe 2003–2004 flu season. This was due to a 2004–2005 flu season [ ] The 2004–05 trivalent influenza vaccine for the United States contained: • an A/New Caledonia/20/99 (H1N1)-like virus • an • a B/Shanghai/361/2002-like virus. 2005–2006 flu season [ ] The • an A/New Caledonia/20/1999-like( • an A/California/7/2004-like( • a B/Jiangsu/10/2003-like viruses 2006–2007 flu season [ ] The 2006–2007 influenza vaccine composition recommended by the World Health Organization on 15 February 2006 and the US FDA's Vaccines and Related Biological Products Advisory Committee on 17 February 2006 used: • an A/New Caledonia/20/99 (H1N1)-like virus • an A/Wisconsin/67/2005 (H3N2)-like virus (A/Wisconsin/67/200...