https://consumer.healthday.com/natural-protection-against-reinfection-with-ba-1-covid-19-variant-lower-2659431328.html
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2/17/23 at 10:16pm
Organization
Healthday.com
Author
Lori Solomon
However, protection against severe disease remains high at 88.9 percent for omicron BA.1 at 40 weeks
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