| Titre : | Multinational outbreak of Salmonella enterica serotype Newport infections due to contaminated alfalfa sprouts. (1999) |
| Auteurs : | C.A. VAN BENEDEN ; V.K. BALAN ; A. BELL ; D. FLEMING ; K. HEDBERG ; W.E. KEENE ; M.T. KELLY ; A.S. KING ; W.R. MACKENZIE ; B. MAHON ; R.A. STRANG ; D.H. WERKER ; British Columbia Centre for Disease Control. Epidemiology Services. Vancouver. CAN ; Department of Health Care and Epidemiology. University of British Columbia. Vancouver. CAN ; Oregon Health Division. Portland. USA |
| Type de document : | Article |
| Dans : | JAMA - Journal of the american medical association (vol. 281, n° 2, 1999) |
| Pagination : | 158-162 |
| Langues: | Anglais |
| Mots-clés : | Salmonellose ; Bactériose ; Infection ; Bactérie ; Etats Unis ; Amérique ; Homme ; Examen complémentaire ; Epidémiologie ; Contamination ; Amérique du Nord |
| Résumé : | [BDSP. Notice produite par INIST 3jADR0xQ. Diffusion soumise à autorisation]. Context In December 1995, reported Salmonella enterica serotype Newport (SN) infections increased sharply in Oregon and British Columbia but not elsewhere in North America. Similar unexplained increases had been noted in 6 other states in the fall of 1995. Objective To determine the source of the outbreak (s). Design Case-control studies, environmental investigations, bacterial subtyping, and surveillance information review. Settings Oregon and British Columbia communities (winter 1995-1996) and Georgia, Oklahoma, Pennsylvania, Vermont, Virginia, and West Virginia (fall 1995). Participants Oregon and British Columbia residents with culture-confirmed SN infections and onset from December 1,1995, through February 29,1996, and healthy community controls. Main Outcome Measures Odds ratio (OR) of illness associated with exposures ; distribution patterns and culture of alfalfa seeds and sprouts ; subtyping of SN isolates. Results We identified 133 cases in Oregon and British Columbia ; 124 (93%) occurred in patients older than 18 years ; 87 (65%) were female. Case patients were more likely than community control subjects to report having eaten alfalfa sprouts in the 5 days preceding illness (41% [17/41] vs 4% [3/75] ; OR, 17.0 ; 95% confidence interval, 4.3-96.0). Case isolates shared a distinctive pulsed-field gel electrophoresis (PFGE) pattern. The SN was grown from seeds and alfalfa sprouts. (...) |
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