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Changes in invasive pneumococcal disease incidence among 8 children's hospitals in the United States after the introduction of the 13-valent pneumococcal protein conjugate vaccine (PCV13). PCV7, 7-valent pneumococcal protein conjugate vaccine; PCV10, 10-valent pneumococcal protein conjugate vaccine. Adapted from Kaplan SL, et al. Pediatr Infect Dis J 2013;32:203-769).
