This is not a antivaxxer position from me. Other countries accept recovery from the virus when issuing 'vaccine passports'.Natural immunity is being ignored/dismissed because there is no proof. A test takes time and costs a lot.
A vaccine has a paper trail and soon we will have a passport that shows proof.
The antivaxxers who are protesting are blocked from doing almost everything by the mandates.
Vaccinations, masks and social distancing are a proven way to block the virus. "Democratic Rights" do not.
A person that's been treated for COVID-19 has a paper trail that's a lot more solid evidence than a untraceable paper card issued as a reminder for your next shot.
I would strongly recommend vaccination (vaccination is beneficial even for people with natural immunity) for all because it's safer and more predictable but it's simply a current Rational basis policy (that I agree with but not dogmatically) instead of an absolute medical requirement to only accept vaccination as proof of immunity in the US.
https://pubmed.ncbi.nlm.nih.gov/34592838/
A Systematic Review of the Protective Effect of Prior SARS-CoV-2 Infection on Repeat Infection
https://www.bbc.com/news/world-europe-56522408Abstract
We systematically reviewed studies to estimate the risk of SARS-CoV-2 reinfection among those previously infected with SARS-CoV-2. For this systematic review, we searched scientific publications on PubMed and MedRxiv, a pre-print server, through August 18, 2021. Eligible studies were retrieved on August 18, 2021. The following search term was used on PubMed: (((“Cohort Studies”[Majr]) AND (“COVID-19”[Mesh] OR “SARS-CoV-2”[Mesh])) OR “Reinfection”[Majr]) OR “Reinfection”[Mesh]. The following search term was used on MedRxiv: “Cohort Studies” AND “COVID-19” OR “SARS-CoV-2” AND “Reinfection”. The search terms were broad to encompass all applicable studies. There were no restrictions on the date of publication. Studies that did not describe cohorts with estimates of the risk of SARS-CoV-2 reinfection among those with previous infection were excluded. Studies that included vaccinated participants were either excluded or limited to sub-groups of non-vaccinated individuals. To identify relevant studies with appropriate control groups, we developed the following criteria for studies to be included in the systematic analysis: (1) baseline polymerase chain reaction (PCR) testing, (2) a uninfected comparison group, (3) longitudinal follow-up, (4) a cohort of human participants, i.e. not a case report or case series, and (5) outcome determined by PCR. The review was conducted following PRISMA guidelines. We assessed for selection, information, and analysis bias, per PRISMA guidelines. We identified 1,392 reports. Of those, 10 studies were eligible for our systematic review. The weighted average risk reduction against reinfection was 90.4% with a standard deviation of 7.7% (p-value: <0.01). Protection against SARS-CoV-2 reinfection was observed for up to 10 months. Studies had potential information, selection, and analysis biases. The protective effect of prior SARS-CoV-2 infection on re-infection is high and similar to the protective effect of vaccination. More research is needed to characterize the duration of protection and the impact of different SARS-CoV-2 variants.
Covid passports: How do they work around the world?
EU
The certificate can be issued if someone has been vaccinated, recently had a negative Covid test or recently recovered from the virus.
France
In order to obtain the pass, people must have proof they are fully vaccinated, recently tested negative or recently recovered from the virus.
Israel
The green pass system will only allow those over the age of 12 who are vaccinated, recovered from Covid-19 or who present a negative test result to attend large events and enter certain public spaces, the Times of Israel reports. The new pass will come into effect from 29 July.

