NR565 Week 8 Immunizations Exam-Questions with Correct Answers/ Verified
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Course
NR565
Institution
NR565
Both ___ and ___ lymphocytes are activated to reproduce and separate from large pools of memory
cells to protect against ensuing exposure to an antigen - T and B lymphocytes
The Epidemiologic Triangle - -Agent
• Virulence
• Infectivity of a Pathogen
• Addictive Qualities of a Substance o...
NR565 Week 8 Immunizations Exam-Questions with
Correct Answers/ Verified
Both ___ and ___ lymphocytes are activated to reproduce and separate from large pools of memory
cells to protect against ensuing exposure to an antigen - ✔✔T and B lymphocytes
The Epidemiologic Triangle - ✔✔-Agent
• Virulence
• Infectivity of a Pathogen
• Addictive Qualities of a Substance of Abuse
-Environment
• Sanitary Conditions
• Social Context
• Availability of Healthcare
-Host
• Genetic Susceptibility
• Resiliency
• Nutritional Status
• Behavior
Types of Immunity - ✔✔-Herd (Community) Immunity
-Active Immunity
-Passive Immunity
Herd (Community) Immunity - ✔✔-The resistance to an infectious organism because a large group of
people is immune to the infectious organism through immunization/vaccine
-contingent on the likelihood individuals are prone to the infection will encounter the infected
person
• example, most of the people in the community are immune to an infectious disease, which means
everyone does not need immunity to prevent the spread of the infection.
, Active Immunity - ✔✔-When the immune system produces antibodies in response to an antigen by
the vaccine, or by the infection itself
• example, if a person who has never had hepatitis B contracts hepatitis B and recovers from it, that
person becomes immune to hepatitis B because of the immune system's antibody response to the
hepatitis B virus.
Passive Immunity - ✔✔-immunity that occurs naturally
-This type of immunity is passed on when an antibody is produced in another host
• example, immunity is passed on from a mother to her infant or by artificial administration of
antibody-containing formulations.
COVID-19 Vaccine Development Approach - ✔✔-five main ways researchers are looking into
developing vaccines to combat COVID-19.
1. Viral vector vaccines
2. DNA vaccines
3. RNA vaccines
4. Live-attenuated vaccines
5. Inactivated, protein based vaccines
COVID-19 RNA Vaccine - ✔✔-created using info from the RNA of the virus
• Researchers develop messenger RNA (mRNA) with the same genetic code that the virus has, which
encodes SARS-CoV-2 surface protein gene
-Once mRNA gets into our cells, it can self amplify & be translated to produce SARS-CoV-2 surface
protein. • The surface protein is released from the cell & our body's immune system targets it by
producing antibodies
• These antibodies should now be primed to attack future real SARS-CoV-2 viruses that enter our
body, thereby protecting us from future infection
COVID-19 Inactivated Protein-Based Vaccine - ✔✔-vaccines which carry a SARS-CoV-2 surface
protein synthesized & combined with adjuvant to enhance the immune response
• body's immune system should recognize this protein as foreign & target it, creating antibodies,
which should recognize the same surface protein for any future COVID-19 infection.
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