HRPR 1001 Lecture Notes - Lecture 11: Genetic Predisposition, Epidemiology, Etiology
22 Mar 2016
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Document Summary
Illness caused by viruses (lack the machinery to reproduce themselves) smallest disease causing agents composed of nucleic acids and proteins. Borrow cells machinery to reproduce and burst out of cell. Small pox, yellow fever, polio, hep, flu, measles, rabies. Bacteria single celled some are good some are bad secrete toxins and enzymes which destroy cells in host. Cocci- strep throat, scarlet fever, pneumonia, wound infections (staph) round. Illness caused by parasites- protozoa (single celled animals) Tapeworms, hook worms, pinworms, most common human infection in the world: agent. Most people who get the disease are under age 15, but anyone who has not had the disease is susceptible. A person usually only has one episode of chickenpox in a lifetime: environment. It is transmitted from an infected person through coughs or sneezes and from contact with the fluid in the chickenpox blisters.
