Incidence of Upper Respiratory Tract Mycoplasma pneumoniae Infections among Outpatients in Rhône-Alpes, France, during Five Successive Winter Periods

Author:

Layani-Milon Marie-Paule1,Gras Isabelle1,Valette Martine1,Luciani Jacques1,Stagnara Jean1,Aymard Michèle1,Lina Bruno1

Affiliation:

1. Laboratoire de Virologie du CHU et Groupe Régional d’Observation de la Grippe Rhône-Alpes, Hospices Civils de Lyon, Domaine Rockefeller, 69373 Lyon Cedex 08, France

Abstract

ABSTRACT In this prospective study, nasal swab samples from patients with acute respiratory infections were evaluated for the presence of Mycoplasma pneumoniae . This PCR-plus-hybridization-based detection was associated with the detection of other viral agents. During the five winter surveillance periods, 3,897 samples were collected by 75 medical practitioners participating in the Groupe Régional d’Observation de la Grippe surveillance network in Rhône-Alpes (France). M. pneumoniae was detected in 283 samples (7.3%); its rate of detection ranged from 10.1 to 2.0% over the five periods, and it was the second most frequently isolated pathogen during the survey, after influenza A. Three high-prevalence winters were observed, yielding an early winter peak of M. pneumoniae infection which was observed in all age groups. No statistically significant difference was detected between rates of infections in the different age groups, but M. pneumoniae infection was significantly related to lower respiratory tract infection during periods of high prevalence. This study defined the frequency of M. pneumoniae detection from nasal swab specimens in patients with acute respiratory infections, confirming its high prevalence and the presence of large outbreaks due to this pathogen.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

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