In tests, fertility trackers picked up on changes in the body during the incubation period of the virus.
FDA: COVID Shots Approved For Kids Under 5
The virus is still below levels seen in the spring, but there has definitely been an uptick in positive tests.
This is what scientists says about the current likelihood of Covid reinfections.
A total of 989,800 people in private households are estimated to have had the virus last week, up from 953,900 the previous week.
Rishi Sunak accused of losing £11bn of public cash while £4bn worth of defective PPE will be burned.
Here are the long Covid symptoms to look out for – and where you can get help
"How do I explain that, no, it's not a Covid cough, I just don't know how to swallow my own spit."
The culture secretary made the admission as she launched a blistering attack on Tory MP Jeremy Hunt.