Clasification Essay
Infectious Diseases
Historically, infectious diseases have been affecting humanity for hundred of years and now they are the biggest killers of kids and young adults in the world producing more than thirteen millions of deaths in a year. Thirty new infectious diseases have been discovered during the last twenty years and in between those, the mortal Ebola and HIV. There are four types of infectious diseases according to the pathogenic agent that produce this kind of diseases.
Viruses cause the first type of infectious diseases and they cause sickness in every living organism. Lately, a lot of new viruses have been discovered; some of them do not affect humans or animals but some others affected considerably, through history, the human being. Virus diseases include common cold (influenza), herpes, measles, a variety of smallpox, hepatitis, AIDS, and encephalitis.
The second type is the bacterial diseases. The bacteria are a unicellular microorganism that only has a few......
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Approximate Word Count: 453
Approximate Pages: 2 (250 words per double-spaced page)
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Clasification Essay
clasification essay. Infectious Diseases Historically, infectious diseases
have been affecting humanity for hundred of years and ...
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