Covid vaccines have been tested with randomized trials (Phase 3 of the testing phase). Regarding "long-term", that obviously depends on how you define "long-ter

Covid vaccines have been tested with randomized trials (Phase 3 of the testing phase). Regarding "long-term", that obviously depends on how you define "long-term but there is no need to move the goalpost. Generally speaking, in evidence-based medicine drugs and vaccines are not recommended based on incomplete statistics or hunches.