History and development of Haemophilus influenzae type b vaccine.
D016667:Bacterial Capsules; D055808:Drug Discovery; D006192:Haemophilus Infections / Q000517:prevention & control*; D018073:Haemophilus Vaccines / Q000266:history*; D019741:Haemophilus influenzae type b / Q000276:immunology; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans
D018073:Haemophilus Vaccines; C044237:Haemophilus influenzae type b polysaccharide vaccine