FREQUENCY OF DETECTION OF MORAXELLA CATARRHALIS IN CHILDREN WITH A RECURRENT COURSE OF RESPIRATORY DISEASES IN KHABAROVSK CITY DURING 2016-2017
The aim of the study was to evaluate the Moraxella catarrhalis nasopharyngeal carriage prevalence in children of different age groups with a recurrent course of respiratory diseases and perform a comparative analysis of bacterial carriage levels as well as peculiarities of within-year distribution of nasopharyngeal carriage in 2016-2017 years. Bacteriological assessment was performed for 1769 children aged 0 to 14 years old including 1082 children examined in 2016 and 687 children examined in 2017. During the two years of observation the average level of M. catarrhalis carriage for the entire study group was equal to 11.5±0.76%. Nasopharyngeal carriage was detected in children of all age groups with the lowest index in children of 7-14 years (4.1±1.03%) and highest levels of bacterial carriage in children of 2-6 years old (13.8±0.98%). Similarities in distribution of M. catarrhalis nasopharyngeal carriage levels in susceptible age groups were detected during 2016 and 2017 years. The analysis of M. catarrhalis carriage levels dynamics revealed within-year undulation of the index - low levels were detected in February and July and high levels in October and November. The research revealed statistically significant and profound concordance of within-year distribution of M. catarrhalis carriage levels in children during 2016 and 2017 years.