DIPHTHERIA; TETANUS; PERTUSSIS; POLIOVIRUS; HAEMOPHILUS INFLUENZAE TYPE B VACCINE (dif THEER ee uh; TET n us; per TUS iss; poh lee oh vahy ruhs; hem OFF fil us in floo En zuh tahyp B vak SEEN) reduces the risk of diphtheria, tetanus (lockjaw), pertussis (whooping cough), poliovirus (polio), and Haemophilus influenzae type b (Hib). It does not treat these infections. It is still possible to get these infections after receiving this vaccine, but the symptoms may be less severe or not last as long. It works by helping your immune system learn how to fight off a future infection.


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