No dont give anything for an hour (bit late posting this now)
But the general rule is no food for fluids for an hour, then introduce fluids 10mls at a time, if no vomit after another hour you can up the amount of fluids but do it gradual cause if its going to come back it will come back ten fold ie. drinks 10mls 100mls of vomit back and so on.
After 2 hours and no vomit and child is in good spirits and looking for food then give small light foods, crackers, toast. If its a gastric bug then white foods like pasta, potatoes, boiled rice. and cut out or reduce dairy as much as you can.
Good luck and hope he is better soon
7up and tuc crackers are brilliant with the salt