If your dog is experiencing diarrhea or vomiting, it's best to take precautions such as washing your hands frequently. Some viruses and bacteria can transmit from dog feces to humans, causing a stomach bug. If a family member goes to the doctor with gastroenteritis symptoms, be sure to inform your doctor if your dog is also sick. Infants, young children and the immunocompromised are at the highest risk for dog to human infections.
Norovirus is a major cause for diarrhea-induced gastroenteritis. The virus is mainly found in dog feces but can also inhabit food, water, surface areas, vomit and saliva. Dogs are most likely to catch this virus from young children.
Campylobacter and salmonella infections are the most common bacteria infections transmitted from dogs to humans. Symptoms of campylobacter include watery or bloody diarrhea, abdominal cramping, nausea, vomiting and a fever. Depending on the severity of the infection, hospitalization may be necessary. A salmonella infections causes similar symptoms that subside within a week.