St John Ronald K, King Arlene, de Jong Dick, Bodie-Collins Margaret, Squires Susan G, Tam Theresa W S
Centre for Emergency Preparedness and Response, Health Canada, 100 Colonnade Road, Ottawa, Ontario K1A 0K9, Canada.
Emerg Infect Dis. 2005 Jan;11(1):6-10. doi: 10.3201/eid1101.040835.
With the rapid international spread of severe acute respiratory syndrome (SARS) from March through May 2003, Canada introduced various measures to screen airplane passengers at selected airports for symptoms and signs of SARS. The World Health Organization requested that all affected areas screen departing passengers for SARS symptoms. In spite of intensive screening, no SARS cases were detected. SARS has an extremely low prevalence, and the positive predictive value of screening is essentially zero. Canadian screening results raise questions about the effectiveness of available screening measures for SARS at international borders.
2003年3月至5月,严重急性呼吸综合征(SARS)在国际上迅速传播,加拿大采取了各种措施,在选定的机场对飞机乘客进行SARS症状和体征筛查。世界卫生组织要求所有疫区对离境乘客进行SARS症状筛查。尽管进行了密集筛查,但未检测到SARS病例。SARS的患病率极低,筛查的阳性预测值基本为零。加拿大的筛查结果引发了人们对在国际边境进行SARS现有筛查措施有效性的质疑。