“He thought maybe his diabetes was starting to kick up because he just wasn’t feeling right.

He said, ‘I feel like I’m getting COVID again,'” Cowan said.

She added, “It literally went so fast.”

Doctor holding up COVID-19 test

Earlier in 2020, it was believed thatCOVID-19 reinfectionswere possible but “rare,” perScience.

So, what is one of the biggest challenges in working out whether someone has been re-infected with COVID-19?

“So the question is: What are the levels of protection in society?”

Researchers working on a vaccine

Patient getting PCR test