A recent study suggests that hair loss may occur in a few persons who have received vaccinations. This side effect, if confirmed by other studies, would be considered very rare. Other studies to further investigate these findings are underway.
From 1983 to 1995, 60 reports of hair loss were identified and evaluated among persons who had received vaccines. These few cases of hair loss were out of the hundreds of millions of doses of vaccine that have been given to the general population. This study alone cannot prove that vaccines cause hair loss. There may be other health conditions responsible for the hair loss that could not be identified. The study of these cases was conducted using information gathered from the Vaccine Adverse Event Reporting System (VAERS). VAERS reports can be submitted by anyone who has received a vaccine and has concerns about health problems that occur afterwards.
Source: U.S. Department of Health and Human Services