I wouldn't read too much into that warning, at least in terms of overall safety. The fact is, they're releasing these vaccines on a broad scale much faster, and

I wouldn't read too much into that warning, at least in terms of overall safety. The fact is, they're releasing these vaccines on a broad scale much faster, and with less safety testing completed, than usual. So there's plenty of things that we normally wouldn't know yet at this stage of development; in this case just leads to authorities being extra cautious, because this is an experiment. It's just that with other vaccines the general public would never become aware of issues like that, because the vaccines wouldn't have been released so early to so many people. FWIW, looks like the HPV vaccine also had problems with occasional severe allergic reactions: https://www.reuters.com/article/us-vaccine-reaction-idUSN3146783220080901 https://www.reuters.com/article/us-vaccine-reaction-idUSN314... That article is from 2008, so I don't know if that issue has been fixed or not. Regardless, it obviously wasn't a deal breaker, as Gardasil is still being used.