My colleague has written one guidance for “How Protect Yourself and Family in the Outbreak of Coronavirus” :

As of February 29, 2020, the number of Japanese coronavirus patients was 242 (excluding the Diamond Princess), ranking sixth.

2019 Coronavirus disease outbreak in Japan has detailed records for each case on wikipedia:

https://en.wikipedia.org/wiki/2020_coronavirus_outbreak_in_Japan

Based on the above information, the distribution of the transmission route of Japanese coronavirus disease is…

Coronavirus disease (COVID-19) has two key characteristic:

  1. Highly contagious, transfer coronavirus disease from one to another people are vey quick, there are reported examples that it took 15s and another example took 1min that transfer from one to another.
  2. Severe rate is very high, 8% to 18% severe rate of total infected people which made hospital resource overloaded. Due to hospital resource overload, lots of people will die.

Here is the Vicious circle which caused big problems in Wuhan China, the hospital resource is overloaded due to below Vicious circle

Vicious circle:

New patients to hospital-> Long outpatient visits-> Hospitals cannot accept new patients-> Long diagnosis of Coronavirus disease / Hospital accepted-> Patients transfer Coronavirus disease to family and friends-> Increase number of Coronavirus disease infections-> New patients to hospital

Wang Xian-Mark

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