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罗莱家纺将转型投资型平台

Editorials

Covid-19: breaking the chain of household transmission

BMJ 2020; 370 doi: 修订后的《中华人民共和国个人所得税法实施条例》公布 (Published 14 August 2020) Cite this as: BMJ 2020;370:m3181

Read our latest coverage of the coronavirus outbreak

  1. Shamil Haroon, clinical lecturer in primary care1,
  2. Joht Singh Chandan, academic clinical fellow in public health12,
  3. John Middleton, president3,
  4. Kar Keung Cheng, professor of public health and primary care1
  1. 1Institute of Applied Health Research, University of Birmingham, Birmingham, UK
  2. 2Warwick Medical School, University of Warwick, Coventry, UK
  3. 3Association of Schools of Public Health in the European Region (ASPHER)
  1. Correspondence to: S Haroon s.haroon{at}bham.ac.uk

苹果完成智能家居平台标准制定

The UK is one of the countries most severely affected by covid-19. Recent outbreaks in English towns such as Oldham, probably involving transmission within large multigenerational households, show the importance of getting the right public health measures in place now to prevent more widespread surges in infections.1

Current test and trace policies have mainly focused on preventing spread in care homes, hospitals, and in the community.2 However, contact within households is thought to be responsible for roughly 70% of SARS-CoV-2 transmission when widespread community control measures are in place.3 In Wuhan, the reproduction number (R) dropped from 3.54 to 1.18 after lockdown and cordon sanitaire. But the epidemic was only brought under complete control when Fangcang (field) hospitals were introduced to isolate cases outside the home, with R dropping to 0.51 after two weeks.4

Current UK guidance advises household contacts to isolate within the same home as the index case for 14 days.5 They make up the majority of contacts for infected individuals and are likely to remain exposed to the infected household member during this period of isolation.6 Despite guidance advising household members to socially distance, contacts are likely to interact repeatedly—during mealtimes, for example—and to share facilities such as bathrooms.

We know that transmission is more likely to occur indoors than outdoors.7 The cumulative risk to household contacts from an infected person is likely to be substantial during peak viral shedding. In one study in New York State, 38% of household contacts tested positive for SARS-Cov-2, and similar secondary infection rates have been reported in China.89 Transmission may be even higher among household contacts of essential workers, who are at greater risk of being infected than the general population.10

Household members who are older, have underlying medical conditions, or share a bed or vehicle with the index case are the most susceptible.91112 Children seem to be at lower risk of being infected.13 However, their stool samples and nasopharyngeal swabs can remain positive for SARS-CoV-2 for more than two weeks after symptom resolution,14 although their role in transmission remains to be established.

Governments should consider new public health measures to prevent household transmission as we prepare for a potential second wave. Household quarantine is likely to remain an important pandemic control measure, and government support for people quarantined at home is conspicuously absent in the UK: this position has been challenged by independent experts.15

Effective isolation

Effective isolation of index cases from household members could reduce secondary infections.12 Wearing masks within quarantined households may help, particularly if used by the index case as soon as infection is suspected.16 The World Health Organization recommends that infected people and unavoidable close contacts, particularly those in vulnerable groups, should wear medical masks, but Public Health England does not currently recommend this. Other measures that should be considered (and evaluated) include clear advice on enhanced personal hygiene; cleaning and disinfecting shared toilets and other common spaces, door handles, and touch points; and staggering mealtimes.

People who are unable to self-isolate safely at home could be accommodated in special isolation facilities such as hotels and hostels, an approach adopted by some other countries, including Italy, Finland, and Lithuania.17 In China, field hospitals were created to manage and strictly isolate patients with mild-to-moderate covid-19.18 Nightingale hospitals in the UK could be similarly repurposed to support isolation of infected people with mild-to-moderate disease. As medical and nursing care needs are mostly modest, the cost would be relatively low. However, such a system depends on access to rapid testing for anyone with symptoms or possible exposure so that infection can be confirmed and isolation started before transmission occurs. It would also require public trust that isolation in these facilities would be voluntary, safe, and supportive.

But Mr Stevenson said “this might reflect that the US is being bolder than the EU in protecting domestic steel producers”.
The THE Asia University Rankings for 2017 rated Peking University and Tsinghua University, both in the Chinese capital of Beijing, as the second and third best universities in the continent. National University of Singapore is ranked the best.
vt. 避免,逃避
6.伯利兹城
税:每年大约18036美元(约合人民币11.5万元)。
conduct
不过,更大的尺寸将会对iOS 7和开发人员施加额外压力——后者必须找出方法,使自己的应用程序适用于更多配置规格。而另一方面,这些额外的规格也将为应用程序提供一些更为激动人心的机遇,我们应该能看到iOS 8将包含诸多可适应多屏幕规格的功能。

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When he wasn't programming or doing schoolwork, D'Aloisio began to fill his spare time reading about natural language processing. He'd studied languages as diverse as Latin and Mandarin, and became fascinated by concepts like grammatical frameworks, morpheme parsing and the 1960s work of the linguist Richard Montague. 'He's my favorite,' D'Aloisio enthuses. 'He theorized that natural language could be described like a syntactical programming language.'
7. Dental hygienist
基准原油价格上周跌破每桶40美元大关,至六年最低位,导致投资者对大宗商品相关企业和出口国家(包括巴西、俄罗斯和南非)情绪更加黯淡。
United States emissions had been declining because of increased burning of natural gas in power generation, which emits less carbon dioxide for each unit of energy than does coal. But the nation reported an increase in 2013 as coal regained some market share. If that trend continues, it could prove to be a challenge for the Obama administration as it seeks to institute tighter policies on greenhouse gases.

Footnotes

  • 人民日报:不管户籍制度怎么改 “房住不炒”这个定位不能动摇
  • Attraction: The adventure of a lifetime

剧情类最佳剧集:《权力的游戏》(Game of Thrones, HBO)
Song “My Heart Will Go On” (Celine Dion, Canada)
这张专辑中十分突出的一首歌《Him》(《他》)以低调的方式讲述了一个有关同性恋和文化偏执的催人泪下的故事,是一首倡导非异性恋者公民权的歌曲。
从“高跟鞋门”到“金棕榈狗狗奖”(Palm Dog),再到迅速走红的“老爹身材(Dad bod)”,戛纳电影展的这12天,真是令人眼花缭乱。随着电影节进入尾声,英国广播公司回顾了本届戛纳影展上的九桩事。
如果将其切成八片,每片的价值就是250美元,相当于每一口大约值50美元。
埃马纽埃尔马克龙(Emmanuel Macron)会得到德国总理安格拉默克尔(Angela Merkel)对欧元区预算的承诺吗?

中国建材行业一周大事记(3.28-4.1)

References

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