The scientist who is credited with convincing President Donald Trump to take the spread of coronavirus more seriously has said that he is now in self-isolation with symptoms of the Covid-19 virus.

Neil Ferguson, an infectious-disease expert at Imperial College London, said he began self-isolating after developing a cough on Tuesday but “felt fine”.

The epidemiologist, and lead author of the Imperial College study, then developed a high fever at 4am on Wednesday. He said on Twitter: “There is a lot of Covid-19 in Westminster.”

The study, published on Monday, estimated that 2.2m people could die in the United States if measures were not introduced to curb social activity and movements. It warned that hospitals in both the US and UK would be overwhelmed if attempts to actively suppress the spread of the virus were not introduced.

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White House officials were handed a copy of the Imperial College Covid-19 Response Team’s report on Sunday.

On Monday, the Trump administration introduced new guidelines urging Americans to limit their contact with others by working from home and avoiding gatherings of more than 10 people.

Mr Ferguson told BBC Radio 4’s Today program that, as a part of one of the main bodies advising the international response to coronavirus, he had been in many meetings where he thought he might have contracted the virus.