Pathology 3240A Lecture Notes - Lecture 6: Varicella Zoster Virus, Shingles, Gram Staining
11 Feb 2016
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Document Summary
Infectious pathology is the most common form of organic and cellular disease. Fortunately, it is often mild and the pathology" goes virtually unnoticed. Many forms of infection, however, are associated with significant tissue damage or loss of life and infectious disease is still a leading cause of death worldwide. There are many infectious microorganisms with a variety of special abilities that enable them to infect, proliferate, and move onto the next host. Both humoral and cell-mediated immune systems battle infectious organisms (e. g. humoral immunity more often with bacterial infections and t cells with viral infections) and occasionally cause tissue toxicity that lead to illness and disease. Since the immune system has a limited repertoire of tools, different origins of infectious pathology show a great deal of similarity and overlap in symptoms and pathology. Specific symptoms depend on the location of the invading organism and its predilection for specific organs or tissues. Not all interactions between humans and microorganisms are harmful.
