Do specific vaccines cause fainting?
We do not know whether specific vaccines cause post-vaccination fainting, but nearly all vaccines have been reported to be associated with the event. Post-vaccination fainting has been most frequently reported after three adolescent vaccines (HPV, MCV4, and Tdap), based on VAERS data from January 1, 2005–July 31, 2007. However, we do not know whether the vaccines are responsible for post-vaccination fainting or if the association with these vaccines simply reflects the fact that adolescents are generally more likely to experience fainting.
