Staph. aureus causes vomiting in 16-18 hours. The mechanism of action is: (A) Stimulation of cy AMP, (B) Vagal stimulation, (C) Stimulation of cy GMP, (D) Acts through ganglioside GM receptor
Answer is B. "The mechanism by which the staphylococcus aureus causes vomiting is uncertain but may involve direct neural stimulation of the autonomic nervous system rather than a local effect on G.I.T mucosa".