My husband and I are 87 and 79 years old and on a recent trip we each had vomiting and diarrhea for a 24 hr. period. No other symptoms, and we didn t actually feel very ill during that time. We were staying in a place with a kitchen and cooked and ate only food from home that we kept in a very cold cooler on our 6 hr. drive from home, and in a refrigerator when we arrived. We don t suspect food poisoning....could it be a virus or what is your suspicion?