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. 2018 Sep;107(9):1601-1609.
doi: 10.1111/apa.14345. Epub 2018 Apr 26.

Reductions in otitis and other respiratory tract infections following childhood pneumococcal vaccination

Urban Johansson Kostenniemi  1   2 , Jessica Palm  1 , Sven-Arne Silfverdal  1
Affiliations

Reductions in otitis and other respiratory tract infections following childhood pneumococcal vaccination

Urban Johansson Kostenniemi et al. Acta Paediatr. 2018 Sep.

Abstract

Aim: Streptococcus pneumoniae commonly causes respiratory tract infections including acute otitis media and pneumonia. In this study, we evaluated the impact of general infant pneumococcal vaccination, introduced in Sweden in 2009, on respiratory tract infections.

Methods: We studied the incidence of respiratory tract infections and antibiotic consumption in Västerbotten County, Sweden, during 2005-2014 using the County Council's diagnosis register.

Results: Comparing the prevaccination period of 2005-2008 to 2014, the incidences of all-cause acute otitis media decreased significantly in children aged 0-4 and five years to 17 years, by 41.5% and 20.9%, respectively. In addition, we also noted significant reductions in sinusitis and other upper respiratory tract infections, and some reductions in adults. Antibiotic consumption for upper respiratory tract infections decreased by 37.1%, with the largest decrease occurring in children aged 0-4 years. For pneumonia, the incidence significantly decreased by 28.6% for children aged 0-4 years, with no significant changes in older children or adults.

Conclusion: Pneumococcal vaccination was followed by reduced incidence of upper respiratory tract infections and antibiotic consumption in vaccinated children, with some indications of possible herd immunity. For pneumonia, a major reduction was noted limited to the youngest children.

Keywords: Streptococcus pneumoniae; Acute otitis media; Pneumonia; Sinusitis; Vaccination.

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