ABSTRACT
A variety of pathogenic organisms may be encountered through contact with water. These include bacteria, viruses, protozoa and parasites. Infection associated with swimming or diving may be acquired in a number of ways. Water-borne pathogens may enter the body through intact or damaged skin, or mucous membrane. Portals of entry include eyes, ears, nose, throat, lungs, and gastrointestinal or genitourinary tracts. The infection may remain localized to the site of entry or progress to severe, systemic disease (see Chapter 30).
