Invasive group A streptococcal infection outbreaks of type emm118 in a long-term care facility, and of type emm74 in the homeless population, Montréal, Quebec
Rattachement africain : fr, ca. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Background: Two invasive group A streptococcus (iGAS) infection outbreaks occurred in Montréal in 2016 and 2017; one in a long-term care facility (type emm118) and one in the community, primarily involving homeless people (type emm74).Objective: To describe two recent iGAS outbreaks in Montréal and highlight the challenges in dealing with these outbreaks and the need to tailor the public health response to control them.Methodology: All cases of iGAS were investigated and the isolates were sent to the laboratory for emm typing.In both outbreaks, cases of superficial group A streptococcus (GAS) infection were identified, through 1) systematic case detection accompanied by screening for asymptomatic carriers among residents and employees of the long-term care facility and 2) sentinel surveillance among homeless people.Visits were made to community organizations providing homeless services (including shelters) and social networks were analyzed to establish whether there were any links among cases of GAS infection (both invasive and noninvasive) and locations frequented.In both outbreaks, recommendations were made to service providers regarding enhancement of infection prevention and control measures.Results: In the long-term care facility, five cases of type emm118 iGAS were identified over a 22-month period, one of which resulted in death.All residents were screened and no carriers were identified.Among the employees, 81 (65%) were screened and four carriers were identified.Of those, one was a carrier of type emm118 GAS.All carriers were treated, and subsequent follow-up sampling on three carriers (including the one with emm118) was negative.In the community, 23 cases of type emm74 iGAS were detected over a 16-month period, four of which resulted in death.Half of the cases (n=12) were described as homeless, and six others were users of services for the homeless.Sentinel surveillance of superficial infections yielded 64 cultures with GAS, chiefly on the skin, including 51 (80%) of type emm74.An analysis of the social networks revealed the large number and variety of resources for the homeless used by the cases.Visits to the community organizations providing homeless services revealed the heterogeneity and precariousness of some of these services, the difficulties encountered in applying adequate health and hygiene measures, and the high degree of mobility amongst those who use these services.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Invasive group A streptococcal infection outbreaks of type emm118 in a long-term care facility, and of type emm74 in the homeless population, Montréal, Quebec
- Date Crossref
- 03/01/2019
- Éditeur
- Infectious Disease and Control Branch (IDPCB) - Public Health Agency of Canada
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Centre d'Immunologie et des Maladies Infectieuses pays non établi dans la noticeStructure de recherche
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Centre Intégré Universitaire de Santé et de Services Sociaux du Centre-Sud-de-l'Île-de-Montréal pays non établi dans la noticeÉtablissement de santé
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Université de Montréal pays non établi dans la noticeUniversité ou école supérieure
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McGill University Department of Epidemiology pays non établi dans la noticeUniversité ou école supérieure
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Public Health Agency of Canada pays non établi dans la noticeOrganisme public
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Ste. Anne's Hospital pays non établi dans la noticeÉtablissement de santé
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Public Health Laboratory pays non établi dans la noticeStructure de recherche
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Integrated Health and Social Services University Network for South-Central Montréal] Regional Public Health Directorate pays non établi dans la noticeUniversité ou école supérieure
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École de santé publique [School of Public Health] pays non établi dans la noticeUniversité ou école supérieure
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Direction régionale de santé publique pays non établi dans la noticeInstitution
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Secteur Prévention et contrôle des maladies infectieuses pays non établi dans la noticeInstitution
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Department of Epidemiology pays non établi dans la noticeInstitution
Centre d'Immunologie et des Maladies Infectieuses, Centre Intégré Universitaire de Santé et de Services Sociaux du Centre-Sud-de-l'Île-de-Montréal et Université de Montréal, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.