This may help ...
"How Often Will You Need to Get a COVID-19 Vaccine?
How long COVID-19 vaccines offer immunity may change as the virus evolves. It's likely that annual COVID-19 shots may be the norm.www.verywellhealth.com
Key Takeaways
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- The Moderna and Pfizer-BioNTech vaccines could offer immunity against COVID-19 for up to two to three years. However, they will most likely have to be administered annually.
- The Johnson & Johnson, Moderna, and Pfizer-BioNTech vaccines will likely protect against current variants of COVID-19.
- Immunity wanes as antibody levels drop in response to a lack of use.
- Moderna and Pfizer-BioNTech have launched preliminary studies of booster shots.
The CDC is pretty much useless at this stage...
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We don’t know how long protection lasts for those who are vaccinated. What we do know is that COVID-19 has caused very serious illness and death for a lot of people. If you get COVID-19, you also risk giving it to loved ones who may get very sick. Getting a COVID-19 vaccine is a safer choice.
Experts are working to learn more about both natural immunity and vaccine-induced immunity. CDC will keep the public informed as new evidence becomes available.
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Seeing the technology between the types of vaccines and method of testing, I would much rather get the J&J version than the Moderna or Pfizer version. That however is MPO.
How can you expect the CDC to know exactly how long naturally acquire or vaccine immunity will last when you haven’t had the time to make such observations.
That’s not even the responsibility of the CDC, if you want to pin it on a government agency you should be looking at the FDA. But it’s really the pharmaceutical companies making the best guess of the duration of immunity of their respective vaccines based on their knowledge of the technologies used.
I think it’s fair if you want to stick with the tried and true technology of J&J’s DNA vaccine, but it’s really doing the same thing as the mRNA vaccines. DNA just gets transcribed into mRNA which then gets translated into proteins. mRNA vaccines just skip the step of having to be converted from DNA to mRNA. So mechanistically speaking, mRNA vaccines are simpler. The reality is whether you get any of these vaccines you should be fine and they are all very beneficial. Tens of millions of Americans have been vaccinated and we don’t see people dropping dead right and left from them. And I will preemptively mention that long term effects of vaccines really are not a thing considering you’re not being dosed daily and it’s mechanism of action is completely different than small molecule drugs.