Translate the following English sentence to French:
"Appropriate messages about the health effects of AIDS must be delivered to primary school children by teachers who are comfortable with the information that they are trying to communicate."
Les enseignants de l' école primaire qui maîtrisent le mieux les informations qu' ils doivent essayer de communiquer doivent faire passer des messages pertinents au sujet des effets du sida sur la santé aux écoliers.