One of the main medical reasons as to why one might avoid vaccination is that the individual may present allergies.
Allergic reactions can range from mild to severe and life-threatening. Mild allergic reactions will rarely be a solid reason to avoid vaccination, however, there are cases in which one might present severe allergic reactions to the contents of a vaccine.
Therefore, we can confirm that one of the only and main reasons to not get vaccinated is if your physician has instructed you to avoid the vaccine due to a possible severe allergic reaction.
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