That’s been basic science for decades.
Yet, many “smart” people had informed me the last two years that while you can get reinfected after already having COVID, you will not get reinfected if you get the vaccine.
That's one of the things with covid decisions that the public needs to understand. We literally had hundreds of years of best practices as to how to treat a pandemic and viruses that we threw out the window.
Why? Well the WHO and Fauci and others that sold us on this not coming from a Wuhan lab because they were supporting the research there told us to do everything the opposite of what humans have learned and known about dealing with viruses for hundreds of years.
We quarantined the healthy.
We required (and still do some places) loosely fitting and improperly worn cloth masks with openings between threads on the order of 1000 times larger the virus.
We intentionally sent those that were still infectious into nursing homes early on in 6 democrat run states including PA with by far the most vulnerable population who could not escape and would have to breath recirculated shared ventilation air 24/7. This amounts to mass premeditated murder.
We shut down large segments of the economy and are still dealing with the supply chain disaster it caused in a world of just in time supply methods.
We forced healthy population segments that were at infinitesimal risk if they caught the virus to inject themselves with emergency approved shots that were permitted large short cuts in clinical trials that apparently didn't show efficacy but were approved by the government anyway with the caveat that drug companies had zero liability. The government did this by misleading, offering incentives, using celebrity endorsements, peer pressure, incendiary statements from political figures attacking the unvaxxed, and firing them from jobs. Now they are forcing it on children who in some states will not be able to go to school without getting jabbed.
They shut down most hospital procedures because of covid and then later cut medical staff because the revenues were killed off. They literally laid off medical personnel by the thousands during a pandemic and created extreme backlogs in routine medical care once it was resumed. Further, they ensured a million plus heart disease and cancer diagnoses in the US did not occur as it typically would thus significantly reducing the outcomes for those people.
They abandoned logic and reason. We were shutting down gyms were people go to get healthy and stopped teaching children. We handed money out to people who were not allowed to work and then were surprised when some didn't want to go back to work and when inflation spiraled out of control.
If you ever saw the Seinfeld episode were George does the opposite of every instinct, that was our world. Except the US wasn't an unemployed George who lived with his parents at age 40. We were successful and we did the opposite of everything science, human understanding of viruses, capitalism, and human decency said to do.
People have their own thoughts as to why we did the exact opposite and flipped our world upside down.