RE: Participation in COVID-19 vaccine trial, positive antibody test19 Nov 2020 11:13
"Surely if a vaccine isnt 100% all the time to all people - an Antibody test after vaccination is essential. Or are we saying - have a jab and youll probably be protected (but maybe not) Russian Roulette.
And surely ongoing qtly or 6 monthly tests to find lifespan of a vaccine and its protection is also essential (again this is likely to differ between different vaccines and different people)"
No vaccine is 100% effective for 100% of people. With most vaccines, the aim is to get sufficient herd immunity to minimise transmission and/or reduce the potential effects.
We do not routinely undertake confirmatory testing for many vaccines. Where we do, the testing regime (timing, frequency, for which groups, etc.) tends to be tailored to the specific vaccine and will be based on the outcomes from the clinical trials - in particular the Phase III trials. Therefore, you can't be certain what any regime will be until the clinical trials are complete.
Early indications are that confirmatory testing will be used for Covid vaccines - but we won't know the exact regime until the clinical trials are complete. It wouldn't surprise me if there were different regimes for different target groups even within the same vaccine (e.g. older people might be tested more).