Tritanrix HepB er kontraindiceret, hvis barnet har haft en encephalopati af ukendt ætiologi forekommende indenfor 7 dage efter forudgående vaccination med vaccine indeholdende pertussis.
Tritanrix HepB is contraindicated if the child has experienced an encephalopathy of unknown aetiology, occurring within 7 days following previous vaccination with pertussis containing vaccine.