Help please!

My son attends forest school, he’s 3 years old. The nursery just called to say that he found a dead little mouse and was holding it. (He told them he was saving it from the Gruffalo!!). They said they washed his hands and face and put his coat in the wash. But that he did put his hands in his mouth before that!

They said he looks fine and is playing with other kids. Do I need to take him to a&e? I will keep an eye on him but not sure if he needs a shot or anything?!