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.
People who recover from mild COVID-19 have bone-marrow cells that can churn out antibodies for decades, although viral variants could dampen some of the protection they offer.
Note that on this last link from Nature, we now know that past covid is effective at preventing known variants including Delta, per the first two links.
A new study published in the journal Nature estimates that 103 million Americans, or 31 percent of the U.S. population, had been infected with SARS-CoV-2 by the end of 2020
Your first article states that the risk of a breakthrough case for someone with natural immunity is 13 times higher if the infection took place 6 months ago. It also states that vaccinating improves protection for those people.
This would seem to contradict your original claim (and validate my reply), since your statement was predicated on the assumption that someone who was naturally infected in 2020 has as much protection today as someone infected a month ago (or someone who was vaccinated a month ago).
Those 103 million Americans infected last year (well, the survivors anyway) would absolutely benefit from taking a vaccine now if they haven't already.
https://www.science.org/content/article/having-sars-cov-2-on...
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.
https://www.nature.com/articles/d41586-021-01442-9
People who recover from mild COVID-19 have bone-marrow cells that can churn out antibodies for decades, although viral variants could dampen some of the protection they offer.
Note that on this last link from Nature, we now know that past covid is effective at preventing known variants including Delta, per the first two links.
Source for # of Americans who had covid:
https://www.publichealth.columbia.edu/public-health-now/news...
A new study published in the journal Nature estimates that 103 million Americans, or 31 percent of the U.S. population, had been infected with SARS-CoV-2 by the end of 2020