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Nur 412 Unit 5- Communicable Diseases Review Questions and Correct Answers
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Communicable Diseases are caused by pathogens that are transmitted from one person to another Chain of Infection NEED TO KNOW ****** Transmission requires the full _________________ This is a series of events or conditions that lead to the development of a particular disease Causative agent = p...

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  • August 27, 2024
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  • 2024/2025
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  • nur 412 unit 5 communicable diseases review quest
  • communicable diseases are caused by pathogens tha
  • this is a series of events or conditions that lead

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Nur 412 Unit 5- Communicable Diseases
Review Questions and Correct Answers
Communicable Diseases ✅are caused by pathogens that are transmitted from one
person to another

Chain of Infection

NEED TO KNOW ****** ✅Transmission requires the full _________________

This is a series of events or conditions that lead to the development of a particular
disease

Causative agent = pathogenic organism

Reservoir/source

Means of exit = way out of the body

Mode of transmission = method of spread

Portal of entry = way into the body

Person at risk

Causative infectious agents ✅There are many _____________________ out there...

Parasites like tapeworm

Protozoa like malaria

Fungi like athlete's foot

Prokaryote like leprosy

Virus like AIDS

Prion like CJD

Characteristics of Infectious Agents ✅exposure
- dose

Infectivity

,- capacity to enter the host and multiply

Pathogenicity
- capacity to cause disease in the host

Virulence
- severity of disease caused by agent

Toxigenicity
- capacity to produce a toxin or poison

Antigenicity
- ability to induce antibody response in the host

Resistance
- agent's ability to survive environmental conditions

Reservoir ✅this is where infectious microorganisms live

Can be an animal, person, plant soil, or substance

Examples
- humans = measles, varicella
- animals = rabies (dogs, bats, raccoons)

Modes of Transmission ✅are how an infectious agent is transferred from an infected
person or animal to an uninfected one...and areas of opportunity for stopping disease
spread

Important cuz this how we're able to stop disease spread

Modes of Transmission can be direct or indirect

Need to know difference between vehicle and vector borne ***** ✅direct
- microorganism passes directly from an infected host to a susceptible host

Indirect
- microorganism is transmitted through:

~~~ Vehicle-borne transmission
- contaminated materials (fomites) toys, sharp objects, tissues, water, food

~~~ Vector-borne transmission
- nonhuman carrier mosquitoes, ticks, fleas, dogs, etc.

, Direct transmission ✅microorganism passes directly from an infected host to a
susceptible host

Indirect transmission ✅microorganism is transmitted through:

Vehicle-borne transmission
- contaminated materials (fomites) toys, sharp objects, tissues, water, food

Vector-borne transmission
- nonhuman carrier mosquitoes, ticks, fleas, dogs, etc.

Vehicle-borne transmission ✅indirect mod of transmission via contaminated materials
(fomites)

Toys

Sharp objects

Tissues

Water

Food

Vector-borne transmission ✅indirect mod of transmission via nonhuman carriers

Mosquitoes, ticks, fleas, dogs, etc.

Modes of Transmission can also be horizontal or vertical ✅horizontal tranmission
- person-to-person spread of infection through one or more direct or indirect routes
- ex. Sex, sharing needles, etc.
- ex. HIV via sex

Vertical transmission
- passing of the infection from parent to offspring via sperm, placenta, milk, or contact in
the vaginal canal at birth
- ex. Mom spreads HIV via pregnancy, labor, delivery, or breastfeeding
---> should put mom on antiretroviral therapy

Modes of Transmission ✅Airborne

Fecal-oral

Direct contact

Sexual

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