tetano
Editor, Senior Moderator
Zhonghua Liu Xing Bing Xue Za Zhi. 2010 May;31(5):494-496.
[Etiological characteristics of influenza A (H1N1) 2009 virus in Beijing.]
[Article in Chinese]
Huang F, Guo J, Cui SJ, L? YN, Gao ZY, Li WH, Yan HQ, Qu M, Shi WX, Lu GL, Zhang X, Zhang DT, Tian LL, Qian HK, Yang P, Pang XH, Wang QY.
Beijing Center for Disease Control and Prevention, Beijing 100013, China.
Abstract
OBJECTIVE: To analyze the results of detection on influenza A (H1N1) 2009 virus in Beijing from May 2009 to December 2009 and to understand the epidemiologic characteristics during the pandemic period.
METHODS: The study was conducted from the May 1 to December 27, 2009. A total of 101 852 throat swab samples were detected with the real-time RT-PCR assay by the Beijing Network Laboratory. Data was statistically analyzed.
RESULTS: 9843 samples showed influenza A (H1N1) 2009 positive, with an overall positive rate as 9.66%. In terms of the positive rates, they were 2.85% from May to June, 3.32% from July to August and 8.35% from September to October. The peak month fell in November (29.67%) and December (24.33%). The positive rates among the following subpopulations were: 8.40% among the suspected cases, 4.75% among close contact cases, 11.46% among the influenza-like illness cases and 7.33% among the cluster cases with fever. Positive cases mainly fell in age groups 5 - 14 and 15 - 24. The ratio of male to female was 1.5:1.
CONCLUSION: During the pandemic period of influenza A (H1N1) 2009, positive cases gradually increased during May to November but slowly decreasing in December.
PMID: 21163022 [PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21163022
[Etiological characteristics of influenza A (H1N1) 2009 virus in Beijing.]
[Article in Chinese]
Huang F, Guo J, Cui SJ, L? YN, Gao ZY, Li WH, Yan HQ, Qu M, Shi WX, Lu GL, Zhang X, Zhang DT, Tian LL, Qian HK, Yang P, Pang XH, Wang QY.
Beijing Center for Disease Control and Prevention, Beijing 100013, China.
Abstract
OBJECTIVE: To analyze the results of detection on influenza A (H1N1) 2009 virus in Beijing from May 2009 to December 2009 and to understand the epidemiologic characteristics during the pandemic period.
METHODS: The study was conducted from the May 1 to December 27, 2009. A total of 101 852 throat swab samples were detected with the real-time RT-PCR assay by the Beijing Network Laboratory. Data was statistically analyzed.
RESULTS: 9843 samples showed influenza A (H1N1) 2009 positive, with an overall positive rate as 9.66%. In terms of the positive rates, they were 2.85% from May to June, 3.32% from July to August and 8.35% from September to October. The peak month fell in November (29.67%) and December (24.33%). The positive rates among the following subpopulations were: 8.40% among the suspected cases, 4.75% among close contact cases, 11.46% among the influenza-like illness cases and 7.33% among the cluster cases with fever. Positive cases mainly fell in age groups 5 - 14 and 15 - 24. The ratio of male to female was 1.5:1.
CONCLUSION: During the pandemic period of influenza A (H1N1) 2009, positive cases gradually increased during May to November but slowly decreasing in December.
PMID: 21163022 [PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21163022