Severe systemic reactions attributed to the acetone-inactivated parenteral typhoid vaccine.

Typhoid vaccine is recommended for people traveling to areas where they may be exposed to contaminated food and/or water. Two different parenteral forms of the vaccine have been utilized. We report five active duty patients with severe systemic reactions to the acetone-inactivated form of typhoid vaccine. The patients presented with very similar physical exam findings and laboratory abnormalities. Alternative typhoid vaccines that are less reactogenic are now available for use.