Having SARS-CoV-2 once confers much greater immunity than Pfizer vaccine

Asia, B.1.617.2, Coronavirus, Delta, Infection, Israel, Pfizer/Biontech, Transmission, Vaccine, Vaccine Breakthrough, Vaccine Waning, Variants

“The natural immune protection that develops after a SARS-CoV-2 infection offers considerably more of a shield against the Delta variant of the pandemic coronavirus than two doses of the Pfizer-BioNTech vaccine, according to a large Israeli study that some scientists wish came with a “Don’t try this at home” label. The newly released data show people who once had a SARS-CoV-2 infection were much less likely than vaccinated people to get Delta, develop symptoms from it, or become hospitalized with serious COVID-19.”

ScienceMag.org article


Data for ScienceMag article is from Medrxiv Preprint: Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections

“This study demonstrated that natural immunity confers longer lasting and stronger protection against infection, symptomatic disease and hospitalization caused by the Delta variant of SARS-CoV-2, compared to the BNT162b2 two-dose vaccine-induced immunity. Individuals who were both previously infected with SARS-CoV-2 and given a single dose of the vaccine gained additional protection against the Delta variant.”



Large UK study confirms previous Covid-19 infection often outperforms vaccine induced immunity

Image by Lothar Dieterich from Pixabay


** This post was originally published on August 27, 2021 **