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200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Causes of Infectious Diseases Spread of Diseases Defense against Diseases STD’sCommon Information
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Smallest know type of infectious agent
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viruses
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Single celled microrganism
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Bacteria
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ORGANISMS THAT RESEMBLE BACTERIA BUT INVADE CELLS LIKE VIRUSES
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Rickettsias
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Organisms that feed off dead animals, insects, and leaves
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Fungi
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These single cell organisms are larger than bacteria and are most common in tropical areas.
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Protozoams
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When pathogens are spread by physical contact
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Direct Contact
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When pathogens are inhaled
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Indirect
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Causes rabies and malaria
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Animals or insects
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Pathogens are spread by touching
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objects
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Causes the spread of pathogens through food, water, soil and even air
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Environment
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Organism that may cause illness often called “Foreign Invader”
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Pathogen
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This barrier is the first line of defense against invading pathogens
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Physical
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Barriers that include tears and saliva
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Chemical
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When phagocytes engulf and destroy pathogens
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Phagocytosis
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Type of white blood cell that fights pathogens
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Lymphocytes
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Best way not to catch STD’s
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Abstinence
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These are pink or reddish with cauliflower like tops
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Warts
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Blister like sores in the genital area
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Herpes
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Caused by a small bacterium called a spirochete. It has four stages
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syphillis
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Tiny insects that attach themselves to skin and hair in the pubic area
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Lice
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Viral infection that causes stuffy, runny nose, and sneezing
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cold
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Viral infection that causes chills, fever, headache, muscle ache, and weakness
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Flu
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The immunity your body develops to protect you from disease
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Active immunity
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Is a bacterial infection of the throat
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Strep
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This is known as the kissing disease and is a viral infection
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Mono
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