It's healthy to ask questions
about COVID-19 treatments, including vaccines.
Vaccine development generally takes 5-15 years [1, 2].
COVID-19 vaccines were given Emergency Use Authorization (EUA) after only a few months of follow up data. The recent "appproval" of the Pfizer vaccine does not imply long-term safety. .
There are no long-term safety studies of COVID-19 vaccines, and the placebo groups for the current trials have now received the vaccine – making it even harder to assess long term safety .