It's worth remembering that Phase 3 trials follow Phase 1/2 trials, and those earlier trials are responsible for assessing the general safety of the vaccine. Ph

It's worth remembering that Phase 3 trials follow Phase 1/2 trials, and those earlier trials are responsible for assessing the general safety of the vaccine. Phase 3 helps assess safety concerns among a much larger and more diverse group of people, but it is primarily about proving efficacy. They don't give out tens of thousands of vaccines (Phase 3) without a lot of data already showing the vaccine is safe.