Here's what to know about the latest COVID strain - and how to tell if your at-home test is still good to use.

At the start of the SARS-CoV-2 pandemic people who felt unwell had to join long queues for lab-based PCR tests and then wait for two days to learn if they were infected with the COVID-19 virus or not.

By the next day, he was sick as a dog. And, by the way, the rapid antigen test he took when he got home that night was negative. Regardless of how you much of a health risk you see in COVID, it is ...

Blog posts represent the views of CFR fellows and staff and not those of CFR, which takes no institutional positions. Although the COVID-19 pandemic is not yet officially over, it appears to be ...