Journal
EMERGING INFECTIOUS DISEASES
Volume 26, Issue 6, Pages 1147-1155Publisher
CENTERS DISEASE CONTROL & PREVENTION
DOI: 10.3201/eid2606.190951
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Funding
- Plan Nacional I+D+I, ISCIII-Subdireccien General de Evaluackin v Fornento de la Ins estigacian Sanitaria [P111/02081, PI 11/2345]
- Fortdo Europe de Desarrollo Regional (FEDER)
- Catalan Agency for the Management of Grants for University Research AGAUR [2017 SGR 1342, 2017 SGR 0742]
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Vaccination with the 13-valent conjugated pneumococcal disease (PCV13) has reduced invasive pneumococcal disease (IPD), but there have been reports of vaccine failures. We performed a prospective study in children aged 2-59 months who received diagnoses of IPD during January 2012-June 2016 in 3 pediatric hospitals in Catalonia, Spain, a region with a PCV13 vaccination coverage of 63%. We analyzed patients who had been age-appropriately vaccinated but who developed IPD caused by PCV13 serotypes. We detected 24 vaccine failure cases. The serotypes involved were 3 (16 cases); 19A (5 cases); and 1, 6B, and 14 (1 case each). Cases were associated with children without underlying conditions, with complicated pneumonia (OR 6.65, 95% CI 1.91-23.21), and with diagnosis by PCR (OR 5.18, 95% CI 1.84-14.59). Vaccination coverage should be increased to reduce the circulation of vaccine serotypes. Continuous surveillance of cases of IPD using both culture and PCR to characterize vaccine failures is necessary.
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