Key study findings and message GI symptoms are frequent at presentation • Viral load in stool is significantly lower than in lower respiratory tract • Virus not cultivable from stool MERS-CoV high in healthcare environment • GI symptoms among the commonest extrapulmonary symptoms • Intestinal epithelial cells could support viral replication • Primary gastric infection can lead to respiratory symptoms via hematogenous or lymphatic spread Diarrhea may be associated with prolonged viral detection (p 0.069)