Natural immunity wins

Natural immunity 27 times better Severe Acute Respiratory Syndrome Coronavirus 2 (SARSCoV2) Naturally Acquired Immunity versus Vaccineinduced Immunity, Reinfections versus Breakthrough Infections: A Retrospective Cohort Study Background Waning of protection, conferred by 2 doses of the BNT162b2 vaccine, begins shortly after injection, becomes substantial within 4 months. We examined longterm protection of naturally acquired immunity, compared to vaccineinduced immunity. Group 1, N 673, 676 Vaccine not Infection Group SARSCoV2naive individuals who received a 2dose regimen of the BioNTech, Pfizer mRNA BNT162b2 vaccine. Group 2, N 62, 883 Infection not Vaccine Group Previously infected individuals who have not been vaccinated SARSCoV2related outcomes June 1st to August 14th 2021 (Delta variant times) Infection,