Volume 15, Number 10—October 2009
Lack of Airborne Transmission during Outbreak of Pandemic (H1N1) 2009 among Tour Group Members, China, June 2009
|Exposure||Total no. persons||No. cases||Secondary attack rate, %||Rate ratio (95% CI)|
|Seat proximity to index case-patient during flight CZ6659, Chengdu–Jiuzhaigou, June 3|
|Seat proximity to index case-patient during bus rides|
|Never <2 rows||8||2||25||Referent|
|Ever <2 rows
|Talked with index case-patient from <2 m for >2 min|
|Length of conversation with index case-patient|
|>10 min||10||8||80||4.8 (1.2–70)|
*CI, confidence interval.
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