If there is a delay in the distribution chain, how will it affect my vaccination efficacy if I have to wait longer between my first and second dose?
This is a really great question and one many are already discussing given vaccine shortages. Currently it is recommended that you receive the two doses of the Pfizer vaccine 21 days apart. If you miss the 21 day window, you do NOT need to start all over again.
We do not know how this will affect efficacy at this time but will keep updating with recommendations from scientists and public health advocates based efficacy data we have!