in an interview with the Daily Express: “I think it’s possible that I had the Covid virus early on in the tour of Korea, Japan and Australia in January, and got through it, but it’s thickened the blood, which apparently it does, and that could have been the trigger that gave me the heart attack.“I thought it was too early to get it (Covid) but the evidence now seems to be that the virus was around.”Brian went on to say the confirmed cause of his heart attack is “still a bit of a mystery” as he claimed he was keeping fit during his last tour with Queen.“Strangely enough I was the fittest person on that last Queen tour we did,” he divulged.“I did biking every morning and I’m not a person who has ever smoked.