Page 27 - ஸ்டான்போர்ட் பல்கலைக்கழகம் பள்ளி News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Common respiratory viruses are making a comeback, and a particularly severe flu season could be on the horizon, the Centers for Disease Control and Prevention warned Friday. Most common respiratory viruses – influenza viruses, common human coronaviruses, rhinoviruses and more – circulated at historically low levels in 2020, likely due to COVID-19 mitigation measures such as wearing face masks and social distancing, the CDC said in its weekly update.  But now, as those measures relax, some viruses have begun circulating at increased levels at an unusual time of the year, the CDC said.  Reduced circulation of influenza viruses during the past year might affect the severity of the upcoming influenza season given the prolonged absence of ongoing natural exposure to influenza viruses, the CDC wrote. Lower levels of population immunity, especially among younger children, could portend more widespread disease and a potentially more severe epidemic when influenza virus circul

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