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Volume 25, Number 6—June 2019
Research

Respiratory Syncytial Virus Seasonality, Beijing, China, 2007–2015

Jianxing Yu1, Chunyan Liu1, Yan Xiao1, Zichun Xiang, Hongli Zhou, Lan Chen, Kunling Shen, Zhengde Xie2, Lili Ren2, and Jianwei Wang2Comments to Author 
Author affiliations: National Health Commission Key Laboratory of Systems Biology of Pathogens, Beijing, China (J. Yu, Y. Xiao, Z. Xiang, H. Zhou, L. Chen, L. Ren, J. Wang); Institute of Pathogen Biology of Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (J. Yu, Y. Xiao, Z. Xiang, H. Zhou, L. Chen, L. Ren, J. Wang); Capital Medical University Beijing Children’s Hospital, Beijing (C. Liu, K. Shen, Z. Xie)

Main Article

Table 3

RSV positivity, by subgroup, and RSV season characteristics defined by the 10% positivity threshold, Beijing, China, July 1, 2007–June 30, 2015*

RSV year
 No. RSV positive
Season duration, wk
 % RSV-positive PCRs captured
Total
 RSV-A:RSV-B ratio
 Calendar week no. of season (date of last day of week)
Onset
 Peak
 Offset
2007–08 280 273:7 38 (2007 Sep 15) 1 (2008 Jan 5) 19 (2008 May 10) 35 95
2008–09 211 33:178 43 (2008 Nov 25) 3 (2009 Jan 17) 17 (2009 Apr 25) 28 92
2009–10 157 19:138 52 (2009 Dec 26) 7 (2010 Feb 13) 18 (2010 May 1) 20 93
2010–11 210 192:18 40 (2010 Oct 02) 3 (2011 Jan 15) 22 (2011 May 28) 36 94
2011–12 198 184:14 40 (2011 Oct 01) 1 (2012 Jan 7) 17 (2012 Apr 21) 31 98
2012–13 105 8:97 49 (2012 Dec 01) 5 (2013 Feb 2) 16 (2013 Apr 20) 21 94
2013–14† 68 35:33 48 (2013 Nov 30) 7 (2014 Feb 15) 19 (2014 May 10) 25 90
2014–15
 41
 41:0
43 (2014 Oct 25)
 1 (2015 Jan 3)
 13 (2015 Mar 28)
 24
 90
2007–15 combined‡ 1,270 785:485 41 (mid-Oct) 3 (mid-Jan) 20 (mid-May) 33 97
RSV-A dominant§ 729 690:39 40 (early Oct) 2 (early Jan) 20 (mid-May) 34 96
RSV-B dominant¶ 541 95:446 45 (early Nov) 5 (early Feb) 19 (early May) 28 95

*RSV season was defined as consecutive weeks during which the percentage of RSV-specific PCRs testing positive per week exceeded a 10% threshold. RSV, respiratory syncytial virus; RSV-A, RSV subgroup A; RSV-B, RSV subgroup B.
†We classified 2013–14 as an RSV-B–dominant season for the purpose of modeling, even though an almost equal number of RSV-A and RSV-B cases were identified in that season.
‡All children (n = 4,225) in the 8 years of the study (2007–2015) were included in a model to give an average estimate of RSV seasonal characteristics for 2007–15 combined.
§Children who were ill during the 2007–08, 2010–11, 2011–12, and 2014–15 seasons (n = 2,145) were included in a model to give an average estimate of RSV seasonal characteristics for RSV-A–dominant seasons.
¶Children who were ill during the 2008–09, 2009–10, 2012–13, and 2013–14 seasons (n = 2,080) were included in a model to give an average estimate of RSV seasonal characteristics for RSV-B–dominant seasons.

Main Article

1These authors contributed equally to this article.

2These senior authors contributed equally to this article.

Page created: May 20, 2019
Page updated: May 20, 2019
Page reviewed: May 20, 2019
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