Can I receive the quadrivalent influenza vaccine during my menstrual period?

It is generally recommended to avoid vaccination during menstruation. During this period, women's immune function tends to be relatively lower, and receiving the quadrivalent influenza vaccine may increase the risk of adverse reactions, such as worsening fever or pain caused by the vaccine. Although administering the quadrivalent influenza vaccine during menstruation does not affect its protective efficacy, for safety and health considerations, it is advisable for women to receive the vaccine after their menstrual period ends. If a woman must receive the quadrivalent influenza vaccine during menstruation, it should be done under medical guidance, with careful observation and proper post-vaccination care.