If so why bother with proof of vaccination to fly? (an aside, that proof may come in handy later)
I was reading about how the booster shot that Biden wanted was not approved. The article bought up some interesting points, in particular the waning effectiveness of vaccines, especially for those first vaccinated.
https://www.nbcnews.com/health/health-news/fda-advisory-group-rejects-covid-boosters-limits-high-risk-groups-rcna2074
Source
I was also reading about the difference between the antibodies produced by vaccine vs the ones produced by a COVID infection.
https://www.theatlantic.com/science/archive/2021/09/infection-immunity-covid-19-vaccines/620099/
And a story about a person who got vaccinated but had no antibodies from that particular vaccine
https://old.reddit.com/r/worldnews/comments/pqzban/covid19_hong_kong_lawmaker_regina_ip_gets/
And my current thinking is why bother with all of this proof of vaccine when a test for antibodies is what really tells the story. Answering my own question is that the antibody test is a blood test, but reading this CDC article made my head spin with all of the conditions that may apply.
https://www.cdc.gov/coronavirus/2019-ncov/lab/resources/antibody-tests.html
I hope that helps
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