Stany Zjednoczone zgłaszają obecnie najwyższą 7-dniową średnią dziennych nowych przypadków COVID-19 od początku pandemii, przewyższając rekord ze stycznia.
Gdy Stany Zjednoczone wchodzą w trzeci rok pandemii COVID-19, liczba przypadków jest wyższa niż kiedykolwiek i zakłóca funkcjonowanie firm, plany podróży i harmonogramy szkolne.
Wariant Omicron wydaje się powodować mniejsze uszkodzenia płuc w porównaniu z poprzednimi wariantami koronawirusa, co może być przyczyną mniejszego nasilenia choroby.
Nowe badanie mówi, że zakażenia wirusem COVID-19 mogą pozostawić po sobie przeciwciała, które zwrócą się przeciwko osobie i zaatakują jej tkanki i narządy miesiące po wyzdrowieniu, nawet jeśli wcześniej miała ona niewiele lub nie miała żadnych objawów.
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