He is taking a four week trip to Iran and we are discussing taking the 4 yr. I am hoping that someone can give me some advice about this. I have already called the health dept. I still do not feel comfortable with her going, probably because I have not been. I can understand your concerns my son was seven when he traveled to Iran and he did get sick.
Bottled water is good also make sure milk is pasteurized.
Be careful with fresh fruit, peel or better cook if possible. Take a supply of meds, children's Tylenol, pedialite or powdered Gatorade if they do get sick it helps to keep electrolytes in balance. I also sent the second time motion sickness medication I don't the dosage for four year olds. Try to avoid the times of heavy street traffic as the air makes is hard on their little lungs. Milk is good to help settle the stomach.