Please do not interpret this post as a blanket endorsement of vaccination; this is a complex topic that demands a sophisticated understanding of immune system regulation and the knowledge and clinical experience to apply it on an individual basis. However, this study just published in The Lancet is of interest because it confirms that antipyretic (fever suppressing) medications must be used judiciously (after vaccination or otherwise), because they suppress the body’s disease fighting immune response. “Although febrile reactions significantly decreased, prophylactic administration of antipyretic drugs at the time of vaccination should not be routinely recommended since antibody responses to several vaccine antigens were reduced.”