My high risk OB who is at Francis Perry and Royal Women's in Melbourne had 3 listeria patients in a year - I asked him when I was pregnant how often he sees it...so it does happen and they had to spend the remainder of their pregnancy in the hospital and hope that they didn't lose their babies. Low risk maybe because rare, but harsh consequences...to me it had to be low risk/minor consequences to even consider something when I was pregnant...but I'm like N2L - 4 years of trying, multiple miscarriages - no way was I going to do anything to jeopardize my pregnancy or health of my baby...I abstained from everything they recommend abstaining from (of course, made a few unintentional mistakes along the way in terms of food and panicked)...figured after 4 years of dealing with cycling and losses, I could pretty much do anything for 9 months. Oh - and so far, no allergies and a good little eater.