据美国食品安全新闻网报道，去年5月加拿大卑诗省出现了一种罕见的沙门氏菌菌株，名为阿格伯尼沙门氏菌（Salmonella Agbeni），它不同于鼠伤寒沙门氏菌和肠炎沙门氏菌，在北美地区非常罕见。加拿大卫生当局已对此种罕见的病菌展开了调查。
部分原文报道如下：
Rare Salmonella Strain Sickened 8 in British Columbia Last Year
Outbreak study yields lessons about investigation techniques
Salmonella Agbeni -- unlike strains such as S. Enteriditis or S. Typhumurium -- is rarely responsible for human illness in North America. But in May of last year, this serotype sickened 8 people in British Columbia, causing illnesses that were unusual enough to prompt a special investigation into the outbreak.
The resulting study was published in the September 2012 issue of Emerging Infectious Diseases.
While researchers were unable to pinpoint the source of the bacteria, they say that the unique characteristics of the outbreak -- including an abnormally long incubation period and a high percentage of urinary tract infections -- offer valuable lessons for future Salmonella investigations.
During this outbreak, victims began experiencing symptoms 5 -7 days after being exposed to the bacteria, marking an unusually long incubation period for Salmonella, which normally causes illness between 6 and 72 hours after ingestion. This fact suggests that investigators may need to reach farther back in time when looking for common exposures among victims, says the study.
Health officials currently question Salmonella patients about what they ate in the 3 days prior to illness, say the authors. But this outbreak suggests that this time frame may need to be expanded, they note.
In this case, that 3-day window didn't include the event that turned out to be the likely source of infection for the majority of the B.C. patients -- a wedding attended by 7 of the 8 victims.
原文链接：http://www.foodsafetynews.com/2012/08/rare-salmonella-strain-sickened-8-in-bc-last-year/
日期：2012-08-30
