Watford defender Adrian Mariappa said news that he had tested positive for coronavirus came as a "big surprise" as he has felt no ill effects.
The 33-year-old was one of three positive tests at Watford with the other two among staff members.
The Hornets accounted for half the six COVID-19 cases detected from 748 tests of Premier League players and staff ahead of a return to training in small groups this week.
"Ever since I got my positive result back on Tuesday, I've been scratching my head to try to work out how I might have got coronavirus," Mariappa told The Telegraph.
"It was a big surprise because I haven't really left the house, apart from some exercise and the odd walk with the kids. I've mainly just been homeschooling and keeping fit."
"We've been fully monitored the whole time and the club have been able to track our distances and things. I've been really excelling in all of that and feeling great."