Infectious and Parasitic Diseases

Conditions caused by a specific communicable organism, a bacterium, virus, parasite or fungus, transmitted from a source to a host, following ICD-10 Chapter I (Certain Infectious and Parasitic Diseases). Belongs here: a disease defined by its causative pathogen and its transmission, such as tuberculosis, malaria or a viral hepatitis. Does not belong here: an infection classified primarily by the organ system it damages once established, such as a bacterial pneumonia grouped under diseases of the respiratory system, or a condition whose defining feature is the body's own immune response rather than the pathogen itself, grouped under diseases of the blood and immune mechanism.