The changing epidemiology of invasive meningococcal disease in Canada, 1985 through 1992. Emergence of a virulent clone of Neisseria meningitidis.
JAMA
; 273(5): 390-4, 1995 Feb 01.
Article
en En
| MEDLINE
| ID: mdl-7823384
OBJECTIVE: To describe the occurrence of invasive meningococcal disease (IMD) in Canada with respect to demographic variables and characteristics of the isolated strains of Neisseria meningitidis. DESIGN: National surveillance case series. SETTING: Canada, 1985 through 1992. OUTCOME MEASURES: Morbidity and mortality. MAIN RESULTS: The incidence of IMD averaged 1.38 per 100,000 person-years, with considerable regional variation. In 1988, serogroup C organisms became more common, with one strain of the electrophoretic type 37 (ET-37) complex of N meningitidis, termed ET-15, the predominant group C strain identified. With the increase in group C disease, a greater proportion of cases were older than 5 years. By 1991, ET-15 was the most common strain identified in most parts of the country. Electrophoretic type 15 had a case fatality of 17.8% vs 8.1% for all other IMD (P < .001). Among cases 20 years and older the case fatality for ET-15 was 22.4%. CONCLUSIONS: The group C, ET-15 strain of N meningitidis, first identified in Canada, was more virulent than other prevalent strains during this period. Active surveillance, rapid identification, and typing of N meningitidis will assist public health decision making in the control of emerging strains.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Vigilancia de la Población
/
Infecciones Meningocócicas
/
Neisseria meningitidis
Tipo de estudio:
Incidence_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Screening_studies
Límite:
Adolescent
/
Adult
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
País/Región como asunto:
America do norte
Idioma:
En
Revista:
JAMA
Año:
1995
Tipo del documento:
Article
País de afiliación:
Canadá
Pais de publicación:
Estados Unidos