Britain's Prince William secretly battled coronavirus in April -- days after his father Prince Charles contracted it -- and was left 'struggling to breathe,' according to a report.
The Duke of Cambridge, 38, didn't want to alarm the public so kept his illness private.
William was treated by palace physicians and quarantined at the family home of Anmer Hall in Norfolk. His wife did not fall ill or test positive for the virus, it is understood.
"There were important things going on and I didn't want to worry anyone," the Duke said at an engagement, according to The Sun.
That month, William continued working and made 14 telephone and video calls despite sources revealing he was rocked by the disease.
A source told The Sun: "William was hit pretty hard by the virus -- it really knocked him for six. At one stage he was struggling to breathe, so obviously everyone around him was pretty panicked. After seeing
medics and testing positive -- which was obviously quite a shock given how fit and healthy he is -- William was determined it should be business as usual though. He was determined to fulfil his
engagements."
Kensington Palace declined to comment.