Prince William tested positive for COVID-19 back in April, shortly after father Prince Charles contracted the virus, the BBC reports. William was "hit pretty hard" and was reportedly "struggling to breathe," an insider said. Prince William tested positive for COVID-19 in April, shortly after father Prince Charles announced in March that he had contracted the virus, the BBC reports. A palace source confirmed William's diagnosis to the BBC, though Kensington Palace declined to issue an official comment. William reportedly feared that publicly announcing his COVID-19 diagnosis would send the U.K. into "panic mode," the Sun reports.