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Essay Galaxy - Hepatitis
THE PRIORITY OF HEPATITIS B VACCINATIONS IN CANADA
The increase in the number of children attending schools in Canada and the potential for transmission of viral infection in that environment is a problem of great size. A virus is defined as "a morbid principle, or a poisonous venom, especially one capable of being introduced into another person or animal" in The Shorter Oxford English Dictionary. Due to their miniscule size, it was not until 1885 that Adolf Mayer observed their existence in the mosaic (leaf-spot) disease of the tobacco plant, which he described as to be caused by a strangely invisible contagious agent.1 This particular living entity was so small that it readily passed through a porcelain filter. With the invention of the electron microscope by Ernst Ruska, the virus' true anatomy was first time visible to us in 1933.2 They are so infinitesimal that billions cou....
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Number Of Pages: 6 |
Number Of Words: 1560 |
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