Here's how coronavirus lab tests really work, and why they don't always give satisfying results

A step-by-step explanation of how coronavirus lab tests really work — and why they can...

Brain-eating amoebas are thriving in US rivers and lakes. The problem is getting worse every year

As the world gets hotter, this dangerous heat-loving single-celled organism may be found...

CDC: Almost all of the US kids and teens who've died from Covid-19 were Hispanic or Black

Roughly 0.03% of coronavirus cases in kids and teens under 21 have been fatal so far in...

Your coronavirus risk comes down to these 6 C's, according to the CDC's infectious-disease leader

The 6 C's, according to the CDC's Deputy Director for Infectious Diseases: Crowds, close...

New CDC study offers the strongest evidence yet that Covid-19 can spread in airplanes

The South Korean researchers say hand washing, mask wearing, and physical distance at all...

The WHO just released specific mask guidance for kids

The guidance is broken into age groups: kids over 12 should wear masks, kids under 6...

Trump forcing CDC to ease US school reopening guidelines - experts warn they will be super-spreaders

Public health experts warn that we don't know enough about how the virus impacts kids,...

CDC admits true Covid-19 count for the US is likely to be 10 times higher than official count

"Our best estimate right now is that for every case that's reported, there actually are...