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Cross-protection from seasonal epidemics of human coronaviruses (HCoVs) has been hypothesized to contribute to the relative sparing of children during the early phase of the pandemic. Testing this relies on understanding the prepandemic age distribution of recent HCoV infections, but little is known about their dynamics. Using England and Wales as a case study, we use a transmission model to estimate the duration of immunity to seasonal coronaviruses, and show how cross-protection could have affected the age distribution of susceptibility during the first wave, and could alter SARS-CoV-2 transmission patterns over the coming decade. ....
The first person in Michigan with a known case of the more contagious P.1 variant, which originated in Brazil, was a hair stylist from Bay County. ....
The subject line on the email read: Extremely Important P.1 Variant Identified in Bay County. This is the first of this variant identified in Michigan to date, read the message, dated March 31 and sent from Melanie Perry, an epidemiologist at the Michigan health department, to Bay County health officials. Believed to be about two times more contagious than earlier strains of COVID-19, the P.1 coronavirus variant originated in the Amazon in November 2020. It s a concern not only because it s more contagious, but also because monoclonal antibody treatments are less effective in people with the P.1 variant, which has 17 unique mutations. The strain also is known to reinfect people who ve already had COVID-19, studies have shown. ....
South Africa Moves to Restart J&J: Virus Update msn.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from msn.com Daily Mail and Mail on Sunday newspapers.