A source tells ET the royal couple will act accordingly if they are made aware of being in contact with someone who tested positive.
The Prince of Whales twice extended his hand before withdrawing it at the last minute, upon arriving at the Princes Trust Awards.
Head-to-toe power colors are Meghan's go-to on the farewell tour.
Meghan Markle met with the group of scholars on Monday.
Meghan Markle and Prince Harry stepped out for Commonwealth Day, marking their last appearance before they step down as senior royals.
The Duchess of Sussex has perfected her royal look.
Rodriguez and his fiancee, Jennifer Lopez, ran into the duke and duchess last month in Miami.
The Duchess of Sussex turned heads on Monday in her all-green look.
ET spoke to Aker Okoy on Monday as he reflected on 'the best moment of my life.'
ET caught up with the 16-year-old who called Meghan Markle 'beautiful,' after she brought him onstage at her surprise IWD appearance.
See the duchess' stunning fashion and beauty looks for her final engagements as a senior member of the royal family.
The fab four reunited for Commonwealth Day, marking their last appearance together before Meghan and Harry step down as senior royals.
This marked their first public meeting since Harry and Meghan announced they were stepping down as senior members of the royal family.
The senior royals in attendance at the service on Monday were noticeably not shaking hands with other attendees.