变异了这么多次还是同一种病毒吗

while ADE is a theoretical possibility with a COVID-19 vaccine, clinical trials in people so far have not shown that participants who received the vaccine have a higher rate of severe illness compared to participants who did not receive the vaccine. Given the paramount importance of vaccine safety, scientists continue to encourage rigorous safety monitoring so as to completely rule out ADE as a potential side effect.

就是说现在还没有证据说有ADE