The ratio of the number of deaths compared to the total number of cases of that disease. Epidemiology is the observation of the occurrence of disease in populations Prevalence of a disease is defined as the number of cases within a given population. Occurring spontaneously, due to a mutation. Is not heritable. Iscemia is the loss of blood supply to a specific locality.
Anemia is the reduced numbers of red cells in the blood or generalized lack of blood.
These are related to nutritional diseases. Many antibiotics are derived from fungi. Penicillin is produced by Penicillium spp. Others change atmospheric nitrogen into forms available for plant use. Protozoa and Metazoa make up the majority of all parasites.