• Prince William tested positive for COVID-19 but did not announce it to the public 
  • Kensington Palace refused to comment on Prince William's COVID-19 diagnosis
  • The Duke of Cambridge was allegedly hit pretty hard by the virus 

Prince Charles wasn't the only royal who contracted coronavirus because Prince William had also tested positive for COVID-19, according to reports.

Prince William, the second in line to the throne, tested positive for coronavirus in April, the BBC reported. However, the Duke of Cambridge decided to not announce it publicly because he wanted to avoid further alarm considering that Prince Charles and Prime Minister Boris Johnson had already announced their coronavirus diagnosis, according to BBC royal correspondent Jonny Dymond.

"But the palace also tries to preserve some privacy for the Royal Family," he added.

Despite his condition, Prince William was able to carry out 14 telephone and video call engagements that month. 

Kensington Palace refused to comment on the report.

Prince William's COVID-19 diagnosis was first reported by The Sun. An insider even told the British outlet that the duke "struggled to breathe."

"William was hit pretty hard by the virus - it really knocked him for six," the source told the outlet.

"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 fulfill his engagements."

Prince William was concerned that publicizing his condition would make everyone panic and he felt that there were more important things going on in the country at the time.

But his diagnosis reportedly made him realize that "anyone can catch this awful disease - and knows how imperative it is that we all take this second lockdown seriously."

In March, the palace announced that Prince Charles tested positive for coronavirus. Clarence House did not confirm how the Prince of Wales contracted the disease but announced that he was already in isolation at Windsor Castle.

Camilla moved to another area of the estate to self-isolate. Both were in good spirits during the isolation, according to a source.

“There is a sense of keeping calm and carrying on. The duchess is concerned for him but she is aware of his own good spirits and therefore is keeping a close eye on him and mindful of her own situation. She is upbeat," a source told People at the time.

Prince William was speaking as part of a free streamed TED event aimed at unifying people to face the threats of climate change Prince William was speaking as part of a free streamed TED event aimed at unifying people to face the threats of climate change Photo: POOL / Kirsty Wigglesworth