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Chelsea star Kai Havertz has now admitted that he had taken Covid-19 very lightly until he recently fell ill to the virus.
The 21-year-old missed a fortnight of games as he had to recover from the virus, away from his teammates.
Having missed a couple of games, Havertz is now back in the squad, and he has admitted that he probably underestimated the virus.
Speaking about how unwell he felt, he told Football Focus: “It was like a very bad flu for me so I think now I know it is very bad for people.
“Before I sometimes thought, ‘OK it is not so bad’ but now I get it and I know for older people and people who had illnesses before it can be very bad.
“We all have to look out for each other. To be honest, it was personally very hard.”
He added: “When you do nothing for two and half weeks and then you start training again, you feel like you have never played football before. For me it took two or three weeks to get back to 100 per cent.
“Now I have started three games and I’m feeling good. It takes a lot of time and it took around one and a half months for me to get back but now I think I am very fit again and can start to attack again.”