Anthrax vaccines in Iraq - Why?

Mike Francis is a reporter for The OregonLive.com and is embedded with 2/162 Oregon National Guard in Baghdad. He is blogging while stationed with the troops.

I was reading his latest post when this caught my eye:

THE MEDICS ARE ADMINISTERING anthrax vaccines to soldiers by the score. Lots of sore arms. The base doctor also has performed a handful of vasectomies. Lots of sore....people.

Why? Maybe they didn't have time before they left the US or do they know something and aren't saying?
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