it won't eliminate the risk, but it will reduce it.
My local news advised people to throw out any bagged spinach they had, but said that if people were going to eat it, they should wash it first.
I did a quick search and found an article at Forbes that pretty much said the same thing:
"We're telling people if they have bagged produce and they feel like it's a risk, throw it out. If they feel like they have to eat it, wash it first in warm water."
http://www.forbes.com/business/commerce/feeds/ap/2006/0...