Jeremy Clarkson has exlained how a close pal and co-star has been "hit hard" with coronavirus.The former Top Gear regular said they had "recovered" before taking another turn for the worse.The 60-year-old opened up about The Grand Tour producer Andy Wilman, 57, in his latest column for The Sun.He recalled how the exec was first "struck down" six weeks ago but he had spoken to him this week and he didn't sound good after seemingly overcoming it.Jeremy went on to question whether Prime Minister Boris Johnson was "fit enough to work" after battling COVID-19 himself.The politician confirmed he had tested positive in March and was later admitted into intensive care.The 55-year-old was moved out of intensive care on April 9 and left hospital.