Prince Charles tested positive for coronavirus earlier this week.The Duke of Cornwall took to Instagram to provide fans with an update on his health.Charles is currently quarantined in Balmoral, Scotland.Having previously left their London residence amid the COVID-19 pandemic, Prince Charles announced this week that he's tested positive for coronavirus.Prince Charles and Duchess Camilla had traveled to the royal family's Balmoral estate in Scotland, before the heir to the British throne began displaying mild symptoms.