Taylor M, Galanis E
British Columbia Centre for Disease Control, Vancouver, BC.
School of Population and Public Health, University of British Columbia, Vancouver, BC.
Can Commun Dis Rep. 2014 Oct 2;40(Suppl 1):10-17. doi: 10.14745/ccdr.v40is1a02.
To establish and evaluate criteria to initiate provincial enteric outbreak investigations based on characteristics of alerts, clusters and successful outbreak investigations.
We tracked all enteric disease alerts and clusters reported to the British Columbia Centre for Disease Control (BCCDC) in 2011 and 2012. Information was collected on etiology, number of cases, geographic spread, dates reported, and method of notification. Actions were classified as no further action, review/report or investigation. Outbreak investigation outcome was classified as solved/not solved. 2011 data were used to identify characteristics of alerts and clusters more likely to lead to outbreak investigations and of solved outbreaks to establish criteria. Criteria for initiating an outbreak investigation were evaluated retrospectively using 2011 data and then implemented in 2012.
In 2011, 251 alerts/clusters of enteric diseases were reported. Fourteen (5.6%) led to an outbreak investigation and nine (64.3%) of the outbreaks were solved. Analyzing the data retrospectively, criteria were identified from the alerts and clusters that led to outbreak investigations and successful outbreak investigations: pathogen specificity, timely notification, a common source or event, and multi-regional outbreaks or outbreaks reported by other agencies. After applying these criteria prospectively in 2012, we took action on a smaller proportion of the 244 alerts and clusters (32.0% compared to 44.6% in 2011) and 66.7% of them were solved (compared to 64.3% in 2011).
Continued evaluation will identify whether this will improve outbreak investigations and use of resources in British Columbia.
根据警报、聚集性病例及成功的疫情调查特征,制定并评估启动省级肠道疾病疫情调查的标准。
我们追踪了2011年和2012年向不列颠哥伦比亚疾病控制中心(BCCDC)报告的所有肠道疾病警报和聚集性病例。收集了病因、病例数、地理分布、报告日期及报告方式等信息。行动分为不采取进一步行动、审查/报告或调查。疫情调查结果分为已解决/未解决。2011年的数据用于确定更有可能引发疫情调查的警报和聚集性病例的特征,以及已解决疫情的特征,以制定标准。使用2011年的数据对启动疫情调查的标准进行回顾性评估,然后在2012年实施。
2011年,共报告了251起肠道疾病警报/聚集性病例。其中14起(5.6%)引发了疫情调查,9起(64.3%)疫情得到解决。通过回顾性分析数据,从引发疫情调查和成功疫情调查的警报和聚集性病例中确定了标准:病原体特异性、及时报告、共同来源或事件,以及多地区疫情或其他机构报告的疫情。2012年前瞻性应用这些标准后,我们对244起警报和聚集性病例中较小比例的事件采取了行动(2012年为32.0%,而2011年为44.6%),其中66.7%得到解决(2011年为64.3%)。
持续评估将确定这是否会改善不列颠哥伦比亚省的疫情调查及资源利用情况。