Yes, and the flu pandemic around 1919 killed many millions - but perhaps you’re aware that flu vaccine is not required for attendance at most if not all colleges, because flu has evolved to become less virulent.
The Covid situation changes on an almost daily basis, but it is in the virus’ interest to mutate to become more infective and less virulent. 23 months ago, most colleges were pretty much closed. Now they are open with some even dropping their mask mandates. What I clearly wrote was that the situation is fluid, and that it is likely that if the student is against getting a Covid vaccine, the student is likely to have more options by next application season, so restricting their list to only schools that don’t mandate the Covid vaccine is not appropriate at this time.