I think Freedom said it best. It's a broken trust that will take a bit of healing to repair. Time heals all wounds. So true. Give it time.
I've been so fortunate that I've NEVER been bitten by the 20 some cats I've had in my lifetime. I know working at the shelter, there are some scared ones that lash out and I feel so bad for them but I very wary of them. I try to work with them but it's on pins and needles. I know they sense that and it probably doesn't help but it's a natural instinct to avoid getting hurt! On both ends...cat and me!
Time. That's the only cure. It's traumatic.