This article is from the Solid Food for Infants FAQ, by David M. Poduska poduska@cis.ohio-state.edu with numerous contributions by others.
Food poisoning is much more hazardous for babies (and the elderly and
pregnant) than for the average adult, so you have to pay a little more
attention to this problem with baby foods.
Note that as many as one-third of brands of hot dogs tested in a 1992
study were contaminated with Listeria bacteria, although hot dogs are
marked 'ready to eat'. Be sure to give your child only foods that have
been cooked adequately, and cook all hot dogs until this problem is
cleared up. Fresh cheeses should be made only with pasteurized milk
for the same reason. Aged cheeses such as chedder are safe without
pasteurization.
 
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