In Focus:

To Prevent Most Cavities, Kids Need This One Thing

There’s a quick and easy way to prevent 80 percent of cavities, but most kids don’t get it, federal health officials said Tuesday.

The treatment, dental sealants, works well, but only 60 percent of kids who need sealants get them, the Centers for Disease Control and Prevention says.

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Flies Carry Even More Bacteria Than You Might Think

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