stomach flu. human stomach, magnifying glass, and viruses

gastroenteritis stomach flu isolated white background closeup virus caused gastro bug norovirus gastric gastrointestinitis magnifying glass disease infection illness sick pain health ill ache medical medicine sickness influenza problem unwell healthcare symptom unhealthy kid stomachache child young vector rotavirus diarrhea vomiting dehydration contagious enteric gastrointestinal incubation period transmission hygiene epidemiology treatment prevention handwashing disinfection flu human viruses background close-up gastroenteritis