How could you say that this is really the reason why Bitcoin declined 3%? Yes it's possible but we cannot be so sure about that. Corona virus has been an issue here when this virus start spreading. And I still can't think of it as a major effect of Bitcoin price. It does affect the economy of a country affected but not totally Bitcoin. There's a possibility that it affects Bitcoin but not totally a major cause of Bitcoin decline. For sure there's another reason aside from Corona virus.