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12 Cards in this Set

  • Front
  • Back
What is the definition of an infectious disease?
A disease caused by microorganisms
What is virulence?
The potential of an organism to cause disease
Herd Immunity
A large group of people are immunized. Disease eventually comes to a 'dead end.'
Pasteur's accomplishments
(3)
1. Disproved Spontaneous Generation
2. Established 'germ theory.'
3. Developed 'avirulent' microbe-established concepts of vaccination with modern day vaccines
Koch's accomplishment
Demonstrated a specific germ can cause a specific disease.
(Cows and anthrax)
The first treatment of syphilis
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.'
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
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.
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.
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
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.
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.