- #106
nsaspook
Science Advisor
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Astronuc said:Can it be achieved with exposure to a killed virus as opposed to a live virus? Is natural immunity achieved through exposure to the 28 proteins of the virus as opposed to the one or two proteins in a vaccine?
This is what the study compared and the time period.
We conducted a retrospective observational study comparing three groups:
(1)SARS-CoV-2-naive individuals who received a two-dose regimen of the BioNTech/Pfizer mRNA BNT162b2 vaccine,
(2)previously infected individuals who have not been vaccinated, and
(3)previously infected and single dose vaccinated individuals.
...
The follow-up period of June 1 to August 14, 2021, when the Delta variant was dominant in Israel.
I would guess a similar study with CoronaVac would answer the question.
https://covid19.trackvaccines.org/vaccines/7/