What are common mild side effects associated with vaccines?

Pain at the injection site is a common mild side effect associated with vaccines. This localized discomfort can occur as a result of the body’s immune response to the vaccine components and typically resolves on its own within a few days. The sensation may vary from tenderness to a dull ache and is usually not a cause for concern.

In contrast, nausea and vomiting are less common reactions to vaccines and are not typically categorized as mild side effects for most immunizations. Anaphylaxis is a severe allergic reaction that can occur, but it is rare and not considered a mild side effect. Rash and hives can occur in some individuals, but these are more often associated with allergic reactions rather than general mild side effects of vaccines. Thus, when evaluating common mild side effects, pain at the injection site stands out as the most frequent and expected response to vaccination.