...Narrative The First Epidemics: Poliomyelitis has a root meaning: “polio” (gray) and “myelitis” (marrow). Its Latin suffix “itis” is describing the inflammation that occurs and “polio” means there is an enteric infection, which is a virus. A virus is a small infectious agent that can reproduce inside a many living organisms. With the polio virus it attacks various nervous cells and in some cases it can even sometimes affect the central nervous system. Virus could not be seen until the late 1930s when the electronic microscope was invented. So it was very difficult for people to result these kinds of diseases. The polio virus attacks the body by entering the mouth and then traveling into the digestive tract. It is then excreted through stool....
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