Impact of Pneumococcal Vaccination in the Nasopharyngeal Carriage of Streptococcus pneumoniae in Healthy Children of the Murcia Region in Spain

Autor: Santiago Alfayate Miguélez, Genoveva Yague Guirao, Ana I. Menasalvas Ruíz, Manuel Sanchez-Solís, Mirian Domenech Lucas, Fernando González Camacho, M. Mar Ortíz Romero, Pilar Espejo García, Carmen Guerrero Gómez, Antonio Iofrío de Arce, Laura Moreno Parrado, Rosa M. Sánchez Andrada, Eva Cascales Alcolea, Sebastián Lorente García, Pedro Paredes Reyes, Ángela Casquet Barceló, M. Luisa López Yepes, Juan José Vigueras Abellán, Gonzalo Sanz Mateo, Murcian Pneumococcal Study Group
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Vaccines, Vol 9, Iss 1, p 14 (2020)
Druh dokumentu: article
ISSN: 2076-393X
DOI: 10.3390/vaccines9010014
Popis: Background: An epidemiological study of Streptococcus pneumoniae nasopharyngeal carriage in healthy children was carried out five years after the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13). Objectives: Study the impact of pediatric vaccination with PCV13, and other associated epidemiological factors on the status of nasopharyngeal carriage, the circulating pneumococcal serotypes, and the antibiotic susceptibility to more frequently used antibiotics. Methods: A multi-center study was carried out in Primary Health Care, which included 1821 healthy children aged 1 to 4 years old. All isolates were sent to the Spanish Pneumococcal Reference Laboratory for serotyping and antimicrobial susceptibility testing. Results: At least one dose of PCV13 had been received by 71.9% of children and carriage pneumococcal prevalence was 19.7%. The proportion of PCV13 serotypes was low (14.4%), with an observed predominance of non-vaccine serotypes, 23B, 11A, 10A, 35B/F, and 23A were the five most frequent. A high rate of resistance to penicillin, erythromycin, and trimethoprim sulfamethoxazole was found. Conclusions: A low proportion of PCV13 serotypes were detected, confirming the impact of pediatric vaccination for reducing the serotypes vaccine carriage. High resistance rates to clinically important antibiotics were observed.
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