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COVID-19: past infection plus vaccination may confer the strongest protection against omicron

Miriam Davis, PhD   |   Clinical Summary   |   23 June 2022
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Takeaway

  • Hybrid immunity consisting of previous infection and 3 doses of mRNA vaccination is associated with the strongest protection against symptomatic Omicron infection, according to a national case-control study in Qatar.
  • 2 doses of mRNA vaccination and no previous infection are associated with the weakest protection.
  • Both scenarios, however, are highly...

          

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