H.,
first of all, if you are expressing concerns to your provider about your child being habitually bitten, you should NOT be told "not to worry about it". While biting does happen in young children, it does not mean every child will and will do it often. It doesn't sound like the teachers are making a sufficient attempt to correct the biting problem--especially if there is more than one biter. (Perhaps the problem is not being corrected at home either.) If one kid bites, other kids may think it's okay and join in. Monkey see, monkey do. I run a daycare and do not take children that have a biting problem (or other issues with harmful aggressive behavior). It's bad for business and can be a liability. If you've talked to your provider and you are not satisfied with what they say they are doing about it, I would start looking around for another provider. Your child should not be getting that many accident reports, especially when it's the same issue over and over.
good luck!
A.