||Soldiers tend to be young adults, generally in the third to
fourth generations of life. Acceptance to military service almost always entails medical
screening, so that soldiers tend to be healthy individuals with little chronic disease.
Soldiers around the world train with various types of weaponry and heavy machinery. Some
may live under field conditions without plumbing or running water. Troops are deployed at
times to areas far from home, and may be exposed to pathogens not found in their native
lands. Even when stationed at their home base, personnel living in barracks are often
subjected to relatively crowded living conditions which may facilitate the transmission of