N.R.
I had a similar situation from both ends. My elder son now six got bitten a repeatedlyat a daycare. He was about 2 when it happened. I did not want to move his childcare but I did. Obviously if the daycare cannot prevent it then they are not attentive or understaffed. In another situation my eledest age 5 went to daycare and was the hitter and kicker. He got dismissed from the daycare. I put him in private care, along with his brother. A friend of mine was able to watch them, she had two children and he didn't have the same issue. So you may want to think if the daycare is the one you really want your child in.