My father tested negative for spike specific antibodies 2 weeks after the 2nd Pfizer vaccine (he's not the only one), and as I didn't find any data on people who test negative (and I know that the vaccine has 94% efficiency preventing COVID), he's still mostly not leaving his apartment.
He'll have a test against the viruses themselves next week, but he'll need to wait 2 weeks for the result for that test.
He'll have a test against the viruses themselves next week, but he'll need to wait 2 weeks for the result for that test.