Invasive Pneumococcal Disease in Infants Younger Than 90 Days Before and After Introduction of PCV7

Abstract

The incidence of IPD in Utah infants aged 1 to 90 days caused by PCV7 serotypes decreased after PCV7 introduction, but overall incidence was unchanged. In the post-vaccine introduction period, serotype 7F predominated in this age group and was associated with meningitis.