Greta Thunberg Spent 10 days in Self Isolation After What She Believes Was COVID-19

17-year-old climate activist, Greta Thunberg says she spent the last 10 days in isolation after coming down with what she believes is COVID-19.

Thunberg says she started to feel symptoms -- fatigue, shivers, sore throat and cough -- when she returned to Sweden from a trip around Central Europe roughly 2 weeks ago. Her father, who also traveled with her, had similar symptoms but "much more intense."

In Sweden, Greta says, people are not allowed to test for coronavirus unless they need emergency medical treatment -- so instead of clogging up the healthcare system, she self-isolated instead "in a borrowed apartment away from my mother and sister."

"I have therefore not been tested for COVID-19, but it’s extremely likely that I’ve had it, given the combined symptoms and circumstances."

Greta says she's "basically recovered" but she's sending a strong message to young people -- warning them to TAKE EXTREME PRECAUTIONS so they don't infect someone else who might not handle it as well.

"THIS IS THE BOTTOM LINE: I almost didn’t feel ill. My last cold was much worse than this! Had it not been for someone else having the virus simultaneously I might not even have suspected anything."

"We who don’t belong to a risk group have an enormous responsibility, our actions can be the difference between life and death for many others."

Greta added, "Please keep that in mind, follow the advice from experts and your local authorities and #StayAtHome to slow the spread of the virus. And remember to always take care of each other and help those in need."