Transmissibility of 1918 pandemic influenza.

Transmissibility of 1918 pandemic influenza.
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1918年大流行性流感的传播性。

DOI:
10.1038/nature03063
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发表时间:
2004-12-16
期刊:
影响因子:
64.8
通讯作者:
Lipsitch M
Lipsitch M
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Mills CE;Robins JM;Lipsitch M

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1918年的流感大流行在全世界造成2000万至4000万人死亡,被视为大流行规划的最坏情况。与其他大流行性流感病毒株一样,1918年A/H1N1病毒株传播极为迅速。衡量传染性和阻止流行病所需的控制措施的严格程度的一个指标是生殖数,即每个原发病例产生的继发病例数。在这里,我们通过拟合确定性SEIR(易感染-暴露-感染-恢复)模型来估计1918年流感的再生数,该模型适用于来自45个美国城市的肺炎和流感死亡流行曲线:中值小于3。1918年9月之前对甲型H1N1流感有免疫力的人口估计比例意味着基本生育数的中位数不到4。这些结果有力地表明,1918年流感大流行的繁殖数量相对于许多其他传染病并不多。理论上,一种类似的新型流感亚型是可以控制的。但是,由于流感在具体诊断之前就经常传播,而且全球缺乏抗病毒药物和疫苗储备,因此可能需要采取积极的减少传播措施。本文的在线版本(doi:10.1038/nature 03063)包含补充材料,可供授权用户使用。
The 1918 influenza pandemic killed 20–40 million people worldwide, and is seen as a worst-case scenario for pandemic planning. Like other pandemic influenza strains, the 1918 A/H1N1 strain spread extremely rapidly. A measure of transmissibility and of the stringency of control measures required to stop an epidemic is the reproductive number, which is the number of secondary cases produced by each primary case. Here we obtained an estimate of the reproductive number for 1918 influenza by fitting a deterministic SEIR (susceptible-exposed-infectious-recovered) model to pneumonia and influenza death epidemic curves from 45 US cities: the median value is less than three. The estimated proportion of the population with A/H1N1 immunity before September 1918 implies a median basic reproductive number of less than four. These results strongly suggest that the reproductive number for 1918 pandemic influenza is not large relative to many other infectious diseases. In theory, a similar novel influenza subtype could be controlled. But because influenza is frequently transmitted before a specific diagnosis is possible and there is a dearth of global antiviral and vaccine stores, aggressive transmission reducing measures will probably be required. The online version of this article (doi:10.1038/nature03063) contains supplementary material, which is available to authorized users.
DOI: 10.1001/jama.1919.02610310007003
发表时间: 1919-07-01
影响因子: --
作者:
Frost, WH
通讯作者: Frost, WH
DOI: 10.1016/s0025-5564(02)00129-3
发表时间: 2003-01-01
影响因子: 4.3
作者:
Hill, AN;Longini, IM
通讯作者: Longini, IM
DOI: 10.1126/science.1086616
发表时间: 2003-06-20
期刊: SCIENCE
影响因子: 56.9
作者:
Lipsitch, M;Cohen, T;Murray, M
通讯作者: Murray, M
DOI: 10.1017/s0022172400060988
发表时间: 1984-01-01
期刊: JOURNAL OF HYGIENE
影响因子: --
作者:
SPICER, CC;LAWRENCE, CJ
通讯作者: LAWRENCE, CJ
DOI: 10.1093/aje/kwh255
发表时间: 2004-09-15
影响因子: 5
作者:
Wallinga, J;Teunis, P
通讯作者: Teunis, P