Translate the following English sentence to French:
"Finally, we must also act to protect and support children who are victims of sexual exploitation, and young refugees and immigrants who are a particularly vulnerable group."
Enfin, il nous faut agir en vue de protéger et d' assister les enfants victimes d' abus sexuels, ainsi que les jeunes réfugiés et migrants, qui constituent un groupe particulièrement vulnérable.