Typhoid Conjugate Vaccine Dosing for Food Handlers

Primary Vaccination Schedule

The Centers for Disease Control and Prevention recommends a single intramuscular dose of typhoid conjugate vaccine for initial protection in food handlers, with the modern TCV formulation requiring only one dose to achieve robust immunity 1, 2

The Advisory Committee on Immunization Practices recommends booster doses every 2-3 years for continued occupational exposure in food handlers 1, 2
A single booster dose is sufficient even if more than 3 years have elapsed since prior vaccination in food handlers 1, 2

The Centers for Disease Control and Prevention suggests a practical algorithm for food handler vaccination, including initial vaccination, first booster, subsequent boosters, and booster doses regardless of time elapsed 1, 2

The typhoid conjugate vaccine has superior immunogenicity and better tolerability compared to older parenteral vaccines, with significantly fewer systemic reactions 1, 2
The typhoid conjugate vaccine has longer-lasting antibodies and single-dose convenience, unlike the 4-dose oral Ty21a vaccine 1, 2

The Centers for Disease Control and Prevention advises against using oral live-attenuated Ty21a vaccine in immunocompromised food handlers 1, 2
The Advisory Committee on Immunization Practices recommends not delaying boosters beyond 3 years in high-risk occupational settings, as protection wanes significantly, and not confusing TCV with older Vi polysaccharide vaccines 1, 2
The Centers for Disease Control and Prevention suggests ensuring proper storage and administration of the typhoid conjugate vaccine, given intramuscularly 1, 2