2) Why packed train in Japan still hasn't caused outbreak They don't speak despite the high density in train (remember - it is utter silence on public transportation in Japan) and all wear masks.
3) Intensive use of chest CT scan to find out critical conditions. They have highest number of CT scan per 1000 people in the world. https://data.oecd.org/healtheqt/computed-tomography-ct-scann.... Plus, remember, PCR has high false negative and testing everyone is waste of resources (look at Italy. they tested everyone regardless of severeness of symptom and totally fucked.) You can test a lot only if well-prepared like Korea with SARS experience.
1) they do crashing clusters very well based on this paper. wellhttps://www.medrxiv.org/content/10.1101/2020.02.28.20029272v....
2) Why packed train in Japan still hasn't caused outbreak They don't speak despite the high density in train (remember - it is utter silence on public transportation in Japan) and all wear masks.
3) Intensive use of chest CT scan to find out critical conditions. They have highest number of CT scan per 1000 people in the world. https://data.oecd.org/healtheqt/computed-tomography-ct-scann.... Plus, remember, PCR has high false negative and testing everyone is waste of resources (look at Italy. they tested everyone regardless of severeness of symptom and totally fucked.) You can test a lot only if well-prepared like Korea with SARS experience.