... 43% of cases; PCV7 serotypes caused <2% of cases (Figure 2). ree of the six additional serotypes, (19A, 7F, and 3) accounted for 99% of IPD cases, serotypes 1 and 5 together caused 0.6% of ... indicate that in 2008, an estimated 4,100 cases of IPD (rate: 20 cases per 100,000 population) occurred among children aged <5 years in the United States; PCV13 serotypes caused an estimated ... current as of the date of publication. MMWR e MMWR series of publications is published by the Office of Surveillance, Epidemiology, and Laboratory Services, Centers for Disease Control and Prevention...