内容简介：Estimation of the prevalence and contagiousness of undocumented novel coronavirus (SARS-CoV2) infections is critical for understanding the overall prevalence and pandemic potential of this disease. Here we use observations of reported infection within Chin
Abstract
Estimation of the prevalence and contagiousness of undocumented novel coronavirus (SARS-CoV2) infections is critical for understanding the overall prevalence and pandemic potential of this disease. Here we use observations of reported infection within China, in conjunction with mobility data, a networked dynamic metapopulation model and Bayesian inference, to infer critical epidemiological characteristics associated with SARS-CoV2, including the fraction of undocumented infections and their contagiousness. We estimate 86% of all infections were undocumented (95% CI: [82%–90%]) prior to 23 January 2020 travel restrictions. Per person, the transmission rate of undocumented infections was 55% of documented infections ([46%–62%]), yet, due to their greater numbers, undocumented infections were the infection source for 79% of documented cases. These findings explain the rapid geographic spread of SARS-CoV2 and indicate containment of this virus will be particularly challenging.
以上所述就是小编给大家介绍的《Substantial undocumented infection facilitates the rapid dissemination of CoV2》，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对 码农网 的支持！
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Head First Java（第二版·中文版）
Kathy Sierra,Bert Bates 著、杨尊一 编译 张然等 改编 / 杨尊一 / 中国电力出版社 / 2007-2 / 79.00元
《Head First Java》是本完整的面向对象（object-oriented，OO）程序设计和Java的学习指导。此书是根据学习理论所设计的，让你可以从学习程序语言的基础开始一直到包括线程、网络与分布式程序等项目。最重要的，你会学会如何像个面向对象开发者一样去思考。 而且不只是读死书，你还会玩游戏、拼图、解谜题以及以意想不到的方式与Java交互。在这些活动中，你会写出一堆真正的Jav......一起来看看 《Head First Java（第二版·中文版）》 这本书的介绍吧!
