Hvis det observeres, eller der er stærk mistanke om, at der er blevet indgivet en ufuldstændig dosis (f. eks. hvis barnet spytter vaccinen ud eller gylper vaccinen op), kan en enkelt erstatningsdosis gives i løbet af den samme konsultation.
If it is observed or strongly suspected that an incomplete dose has been swallowed (e. g., infant spits or regurgitates the vaccine), a single replacement dose may be given at the same vaccination visit, however, this has not been studied in clinical trials.