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12 Cards in this Set
- Front
- Back
What is the definition of an infectious disease?
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A disease caused by microorganisms
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What is virulence?
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The potential of an organism to cause disease
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Herd Immunity
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A large group of people are immunized. Disease eventually comes to a 'dead end.'
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Pasteur's accomplishments
(3) |
1. Disproved Spontaneous Generation
2. Established 'germ theory.' 3. Developed 'avirulent' microbe-established concepts of vaccination with modern day vaccines |
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Koch's accomplishment
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Demonstrated a specific germ can cause a specific disease.
(Cows and anthrax) |
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The first treatment of syphilis
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Paul Erlich developed a selectively toxic chemical for treatment of syphilis, called Salvarsan. It is a derivative of arsenic. The 1st antimicrobial drug. Called 'the magic bullet.'
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Kinds of vaccines:
Dead whole microorganisms 1.Killed vaccines 2. Inactivated vaccines |
1. Whole-cell BACTERIAL preparations that have been treated with phenol, formaldehyde, or heat
2. Inactivated vaccines - whole-virus vaccines that have been killed with chemicals, etc |
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Kinds of vaccines:
Living microorganisms that have lost their virulence but maintain immunizing antigens. 1. Attenuated vaccines |
preparations of mutant strains that have lost one or more virulence factors. Refers to bacteria or viruses.
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An antigenic fragment of the organism best suited to stimulating a strong immune response. They are called:
1. Subunit vaccines 2. Recombinant vaccines |
1. purified component consisting of some virulence factor that alone is harmless but still immunogenic
2. Recombinant vaccines - subunit preparations generated in a non related organism by transfer of genes that encode the subunit component. |
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Kinds of vaccines:
An inactivated exotoxin that stimulates an immune response against the active 1. toxoid vaccines |
1. preparations of chemically inactivated exotoxins that stimulate immunity against the native or active form
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Kinds of vaccines:
A non or poorly antigenic subunit covalently linked to a protein. 1. Conjugated vaccines |
1. purified virulence component (subunit) combined to a protein to improve imunogenicity.
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Kinds of vaccines:
A fragmented killed (whole-cell dead bacterium) conventional vaccine containing desired antigens 1. Acellular vaccines |
1. extracts of disrupted bacterial cells of a killed vaccine that contain just th eantigens to induce the desired response.
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