If a dose of Hib vaccine was given by mistake to a 2-week-old, should further doses of Hib vaccine be given?
Limited data suggest that Hib vaccine given before 6 weeks of age may induce immunologic tolerance to Hib antigen and reduce the response to subsequent doses. As a result, Hib vaccine should not be given earlier than 6 weeks of age. However, if a dose was administered before 6 weeks of age, it should not be counted as part of the Hib series. A full series of 4 doses (Hibtiter, ActHib, and Omnihib) or 3 doses (PedvaxHib and Comvax) should be started at 68 weeks of age as usual. No special protocol or testing is recommended for children who received a dose of Hib vaccine before 6 weeks of age.
Related Questions
- What if during that given time frame, my child received more than one dose of the same vaccine - how many doses will need to be repeated?
- If a child received two doses of Hib vaccine and the second dose was given at 13 months of age, does the child need a third dose?
- If a dose of Hib vaccine was given by mistake to a 2-week-old, should further doses of Hib vaccine be given?
