It's healthy to ask questions
about COVID-19 treatments, including vaccines.

Vaccine development generally takes 5-15 years [1, 2].

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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. [3].

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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 [4].

 

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References

1. https://www.historyofvaccines.org/content/articles/vaccine-development-testing-and-regulation

2. https://coronavirus.jhu.edu/vaccines/timeline

3. https://www.fda.gov/news-events/press-announcements/fda-approves-first-covid-19-vaccine

4. https://www.npr.org/sections/health-shots/2021/02/19/969143015/long-term-studies-of-covid-19-vaccines-hurt-by-placebo-recipients-getting-immuni

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