Epidemiological characteristics and low case fatality rate of pandemic (H1N1) 2009 in Japan.
Epidemiological characteristics and low case fatality rate of pandemic (H1N1) 2009 in Japan.
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DOI：
10.1371/currents.rrn1139
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发表时间：
2009-12-20
期刊：
影响因子：
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通讯作者：
Oshitani H
中科院分区：
文献类型：
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作者：
Kamigaki T;Oshitani H
2009年H1N1流感大流行在日本引起了大规模疫情。然而，病死率（CFR）仍然很低，截至2009年12月17日仅确认85例死亡。分析监测数据以确定2009年日本甲型H1N1流感大流行的流行病学特征。结果表明，大多数报告的流感样疾病病例和住院病例发生在5-9岁和10-14岁的儿童中，他们的CFR极低。然而，儿童（<5岁）和成人的CFRs较高。通过学校积极停课，这些年龄组的传播可能已经减少到最低限度。
Pandemic (H1N1) 2009 has been causing large outbreaks in Japan. Yet, the case fatality rate (CFR) remains low and only 85 deaths have been confirmed as of December 17, 2009. Surveillance data was analyzed to define epidemiological characteristics of pandemic (H1N1) 2009 in Japan. It was shown that most of the reported influenza-like illness cases and hospitalizations have occurred in those aged 5–9 years and 10–14 years, in whom CFR is extremely low. However, CFRs are higher in small children (<5 years) and adults. The transmission to these age groups may possibly have been minimized through aggressive suspension of classes in schools.