A British scientist leading the fight against coronavirus revealed Wednesday that he is showing all the symptoms himself — just two days after meeting with Prime Minister Boris Johnson.

Infectious disease expert Neil Ferguson appeared with Johnson and Health Secretary Matt Hancock on Monday as they announced the latest moves to try to contain the pandemic.

“Sigh. Developed a slight dry but persistent cough yesterday and self-isolated even though I felt fine. Then developed high fever at 4am today,” he tweeted early Wednesday.

“There is a lot of COVID-19 in Westminster,” he said of the London heartland of the UK’s government.

He later thanked everyone for the well-wishes, saying, “I am doing OK — feeling a bit grotty, but in front of my computer.”