This month, it was my turn to be a concerned parent. My son, Adama, is only 3 years old. And at 10 p.m. one night, he started vomiting profusely. Then he had diarrhea. This went on and on until 5 a.m. Adama always insists on sleeping in my bed, so I cared for him as best I could during those frightening hours. My wife and I couldn’t bring him to the local health center immediately, because it isn’t open at night.