Lastly, we did not consider the different vaccine type in our models, since the number of individuals having each vaccine is approximately the same (O-AZ: 73, PB: 77), the bias caused by the vaccine type is almost insignificant.
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Lastly, we did not consider the different vaccine type in our models, since the number of individuals having each vaccine is approximately the same (O-AZ: 73, PB: 77), the bias caused by the vaccine type is almost insignificant.