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Feeling stressed can lower vaccine’s effectiveness

A person’s state of mind may influence the body’s response to a vaccine against meningitis C, suggests new research. The findings support previous research showing a link between psychological factors and antibody response to vaccines. The results of a broad survey revealed that a high level of perceived life stress, but not actual stress, was associated with low antibody levels. A low level of psychological well being – feeling anxious or under strain, for example – was also linked to low antibody levels.