Abstract
Bacterial conjunctivitis is most commonly caused by nontypeable Haemophilus influenzae (NTHi), followed by Streptococcus pneumoniae. No population-based data on the impact of pneumococcal conjugate vaccines (PCVs) on the incidence of bacterial conjunctivitis have been published. We assessed rate dynamics of overall, pneumococcal, and NTHi conjunctivitis in children aged 2-23 months in southern Israel before and after PCV implementation. This is a 12-year prospective, population-based surveillance, from July 2004 through June 2017. Our medical center serves a captive population of approximately 30 000 children < 2 years of age, and its clinical microbiology laboratory processes > 80% of all community-derived cultures, enabling incidence calculation. The 7-valent and 13-valent PCVs (PCV7 and PCV13, respectively) were implemented in the national immunization program in July 2009 and November 2010, respectively. Pneumococci, NTHi, Moraxella catarrhalis, and Streptococcus pyogenes were considered pathogens. Continuous annual incidences and incidence rate ratios comparing the PCV13 period (2015-2017) to the pre-PCV period (2004-2008) were calculated. Disease caused by PCV13 serotypes declined by 93%, without significant replacement w...Continue Reading
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