serotype distribution and resistance patterns among pediatric nasopharyngeal pneumococci collected
in Moscow, 2010-2017.
Mayanskiy N1, Kulichenko T2, Alyabieva N2, Brzhozovskaya E2, Ponomarenko O2, Savinova T2, Lazareva A2.
Abstract
Serotype distribution and antimicrobial resistance were analyzed in 632 nasopharyngeal pneumococcal isolates collected at a single pediatric center in 2010-2017 before and following the introduction of the 13-valent pneumococcal conjugated vaccine (PCV13) in Russia in 2014. The mean prevalence of PCV13 serotypes was 77.7% in 2010-2015 with a significant decline to 58.5% in 2017, which was accompanied by an elevation in serotype 15B/C prevalence (15.1% in 2017), 66% and 26% of 15B/C-pneumococci related to ST1025 and ST1262, respectively. The rate of oxacillin, erythromycin, and clindamycin resistance has increased by 15-20 percentage points from 2010 to 2016, approaching a 40-45% prevalence in 2016. The resistance rates significantly increased over time only in a group of PCV13 serotypes. The growing resistance among serotype 14 pneumococci was associated with expansion of a multidrug-resistant clone of ST143. These results emphasize the need for close monitoring of the constantly changing pneumococcal population.
Diagn Microbiol Infect Dis. 2019 Aug;94(4):385-390. doi: 10.1016/j.diagmicrobio.2019.02.010. Epub 2019 Feb 16.
Проведено ретроспективное когортное исследование
Проанализированы изменения серотипов и резистентности пневмококков в 632 изолятах пневмококка, обнаруженных в назофарингеальных мазках, полученных от детей до 5 лет с симптомами ОРИ, в НМИЦ здоровья детей в 2010-2017гг. (до и после включения в календарь прививок в 2014г. PCV13)
Результаты:
Средняя частота серотипов пневмококка, включенных в PCV13, в 2010-15гг. составила 77,7% и достоверно снизилась к 2017г. до 58,5%