Video of symptoms of COVID
https://youtu.be/OOJqHPfG7pA
Corona virus survival
https://www.ba-bamail.com/content.aspx?emailid=35424
Corona virus models
https://www.theatlantic.com/technology/archive/2020/04/coronavirus-models-arent-supposed-be-right/609271/?utm_medium=10today.ad3li.20200402.421.1&utm_source=email&utm_content=article&utm_campaign=10-for-today---4.0-styling
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