In this task, you are given one French sentence. The major part of the sentences talk about health-related topics, but some of the them describe an organization and its activities. Your job is to translate the given sentences into English.
Q: Au contraire, les patients ayant un systeme immunitaire affaibli peuvent developper une diarrhee aqueuse profuse engageant le pronostic vital, tres difficile a traiter avec les medicaments actuellement disponibles.
A:
By contrast, patients with impaired immune system may develop profuse, life-threatening, watery diarrhoea that is very difficult to treat with currently available drugs.