Queen Elizabeth’sworld has been repeatedly turned upside down over the last year and a half.

Still, Covid-19 has remained a threat to the queen.

After all, the virus disproportionately harms older individuals, per the CDC.

Queen Elizabeth smiling wearing all purple

Still, the queen has remained at the property.

The only question is why.

“The feeling is she still has to be careful yet she’s determined to carry on as normal.

Queen Elizabeth’s Balmoral Castle in Scotland

She does not want to overreact,” a source close to the queen explained toThe Sun.

The queen is vaccinated and has been an advocate for vaccination efforts across Britain.

Still, she wants to remain level-headed.

“All the staff at Balmoral are tested for COVID daily,” a source explained.

“[The impacted staff are] on a separate block on the estate.

Since the queen’s arrival, various members of the royal family have visited.

It’s unknown how the estate worker contracted the virus.