If you have been eating the peanut butter for a week or more with no ill effects, then it is ok. I wouldn't eat anymore, but it is likely that the peanut butter was not affected. The con-Agra site says that they "think" it might be the peanut butter, but are not sure.
If someone has eaten it recently-- keep the jar for several days until you are sure no food poisoning has occured. While most cases manifest pretty quickly (8-12 hours), everyone's metabolism is not the same- some folks run faster and some slower-- keep the jar long enough for anything to show up in the "slower" family members (Fast = go every day; slow = go every two or three days- slower than this may indicate some other type of medical problem that may warrant attention.)
My son just informed me that he ate lots yesterday from a brand new jar (I just found out about this today), so we will see, but as he is a healthy 16-yo boy, he will probably be just fine even if he did get some salmonella.
Many times people get a "24-hour stomach bug/virus" that is almost always food poisoning - they just don't know it. In normal, healthy individuals, it usually goes away on its own. When to worry-- when it becomes a concern about dehydration. Young children and the elderly are the ones who usually get severe cases and should always seek medical attention.
Hope this info helps put minds at ease,
Tracy J
