Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections | medRxiv
“Conclusions 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.”
Having SARS-CoV-2 once confers much greater immunity than a vaccine—but no infection parties, please | Science | AAAS (sciencemag.org)
finalfinalcombinedve20210816.pdf (ox.ac.uk)
“Abstract The effectiveness of BNT162b2, ChAdOx1, and mRNA-1273 vaccines against new SARS-CoV-2 infections requires continuous re-evaluation, given the increasingly dominant Delta variant. We investigated the effectiveness of the vaccines in a large community-based survey of randomly selected households across the UK. We found that the effectiveness of BNT162b2 and ChAd0x1 against any infections (new PCR positives) and infections with symptoms or high viral burden is reduced with the Delta variant. A single dose of the mRNA-1273 vaccine had similar or greater effectiveness compared to a single dose of BNT162b2 or ChAdOx1.
Effectiveness of two doses remains at least as great as protection afforded by prior natural infection. The dynamics of immunity following second doses differed significantly between BNT162b2 and ChAdOx1, with greater initial effectiveness against new PCR-positives but faster declines in protection against high viral burden and symptomatic infection with BNT162b2. There was no evidence that effectiveness varied by dosing interval, but protection was higher among those vaccinated following a prior infection and younger adults. With Delta, infections occurring following two vaccinations had similar peak viral burden to those in unvaccinated individuals. SARS-CoV-2 vaccination still reduces new infections, but effectiveness and attenuation of peak viral burden are reduced with Delta.”
Hello; I have been criticized and put down on a different thread for taking the stance that the naturally immune from having survived the covid virus do not need the vaccine shots. My stance is the naturally immune do not need to risk the vaccines and the dose of the vaccine could be used for those in greater risk. I do not recall without going back if the same sort of critique happened on this site. I figured I was correct based on what I understood, but could not point to current data. Now there is data.
My hope is the naturally immune who were convinced to take the jabs do not have any long term issues. I accepted the risk of the shots because I had a negative antibody test just before taking the first shot. I am old and the risk of the shot seemed a good bet compared to the risk of the virus. I accept any possible effects of the shots as I did not have a better alternative. The naturally immune had a good choice, which was to skip the shots.
There is more to say but I will leave it here.