Indirect contact includes handling of objects such as pencils, handkerchiefs, apples, papers, or desks freshly contaminated by an infected person. Airborne spread, on the other hand, does not require touching or handling of persons or things. The germs are breathed in by another. The infected person may have left the room or school long before the airborne transmission occurs. Generally, however, the transmission interval is rather brief.
Gastrointestinal route means fecal-oral.
Organisms are excreted in stool and must be swallowed by a susceptible person to cause disease. Rules to Prevent Transmission of Disease Wash hands frequently with soap and water, particularly after toilet and before eating. Cover nose and mouth when sneezing or coughing. Use handkerchief or tissue. Stay home when ill .