Apparently, Kate interacted with someone last week who had the virus. According to British rules, people who come in contact with someone with COVID should self-isolate for 10 days.

It doesn't seem to have affected her health, at least so far. A Kensington Palace rep said, "Her Royal Highness is not experiencing any symptoms, but is following all relevant government guidelines and is self-isolating at home."

Here's how tricky this becomes ... Kate showed up at Wimbledon Friday and met with the staff at the All England Club kitchens. She also interacted with people as she ambled through the Wimbledon Lawn Tennis Museum.

She also attended the England Euro 2020 match at Wembley Stadium with Princes William and George on June 29.

Kate was vaccinated in May, so the worst-case scenario if she contracts COVID is probably flu-like symptoms.