Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.

.jp. That's Y-A-K-U-L-T.C-O.JP. When it comes to a guide for your gut, a scientific American podcast series.

This is your fast track update on the COVID pandemic.

We bring you up to speed on the science behind the most urgent questions about the virus and the disease.

We demystify the research and help you understand what it really means.

I'm Tanya Lewis.

I'm Josh Fishman.

And we're Scientific American's senior health editors.

This is our Back to School special episode.

We'll talk about why COVID testing is about to become a school problem.

And then there's some good news about kids' risk for long COVID.

It's pretty low.

If you've got young kids, you've probably already started buying fresh notebooks and maybe a new

backpack.

It's back to school time.

And you've probably bought into some worried, too.

Schools are large group settings, and group settings are good places for COVID outbreaks,

with the infectious sub-variant BA5 running around.

You probably got alert letters last spring saying someone in your kid's class tested positive,

...