The American Academy of Pediatrics says some poisons can cause additional damage when they come back up the throat.

VOA: special.2009.08.11

"Worst. The worst was also the funnest, 'cause I got up early Thanksgiving day and we went to the Burwick Marathon, but it's a nine-mile road race.

VOA: special.2009.11.23

It all adds up and it all goes to a good cause.

VOA: special.2010.05.17

But he says it is cause for concern because it is a new strain, and people have not built up an immunity to it.

VOA: standard.2009.05.01

"This is inviting people to take up the cause from now on.

VOA: standard.2009.03.28