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R0 (reproductive rate)

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12:55 Apr 14, 2020
English to Japanese translations [PRO]
COVID-19 - Medical - Medical (general)
Additional field(s): Medical (general), Journalism
English term or phrase: R0 (reproductive rate)
Definition from Kaiser Family Foundation:
An epidemiologic metric used to describe the contagiousness or transmissibility of infectious agents, which is usually estimated with complex mathematical models developed using various sets of assumptions. It is an estimate of the average number of new cases of a disease that each case generates, at a given point in time. R0 estimates for the virus that causes COVID-19 are around 2 to 3, which is slightly higher than that for seasonal influenza (R0 ~1.2-1.3), but far lower than more contagious diseases such as measles (R0 ~12 - 18).

Example sentence(s):
  • The R0 is not an intrinsic feature of the virus. It can be lowered through containment, mitigation and ultimately “herd immunity,” as people who have recovered become less susceptible to infections or serious illnesses. For the epidemic to begin to end, the reproduction rate has to drop below 1. The Washington Post
  • This chart shows two curves with two very different virus reproduction rates. In the steepest curve, the virus reproduces quickly in a short period of time. In this scenario, emergency rooms, intensive care units and other parts of the health care system are overwhelmed. In an overwhelmed system, mortality rates can be high and those infected may not get the treatment they need. World Economic Forum
  • When the team modeled a scenario in which contacts were notified the instant a person tested positive, it was possible to push the reproductive rate of the virus below that threshold, the team reported in a preprint this week. Science
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Question posted on behalf of translation team:
GBK medical and pharma specialistsGBK medical and pharma specialists


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Summary of translations provided
4RO＝基本再生産数 　reproductive rate= 増殖速度　
Mami Yamaguchi


  

Translations offered


13 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
RO＝基本再生産数 　reproductive rate= 増殖速度　


Definition from own experience or research:
人の感染症患者から何人に感染させるかを表す数

Example sentence(s):
  • ３．感染性：基本再生産数（R0: Basic Reproduction Number） ある感染症に対して、その感染症に対する免疫を持たない集団にその感染症を最初に持ち込んだ一人の感染者が、感染力を失うまでに（免疫の獲得もしくは死亡により）、何人に感染させるかを数値化した感染性の指標です。 例えば、ある感染者がひとり（青①）が、その感染がこれまで見られなかった集団に入ったとします。 その人が1名（青②）に感染させ、さらに、青②の方が青③と青④の2名の方に感染させる。青③の方は、誰にも感染させず（０名）、青④の方が青⑤の方（１名）に感染させる。青⑤の方は、青⑥から青⑧の３名に感染させ、その後も感染が拡がったとします。 - 新型コロナウイルス関連情報�  
Mami Yamaguchi
Japan
Local time: 01:58
Native speaker of: Native in JapaneseJapanese
PRO pts in category: 39
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