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Questions and Answers
Which of the following is NOT a measure targeting the reservoir of infection?
What is the primary purpose of isolation in the context of communicable disease control?
Which of the following is a key principle of control and prevention of communicable diseases?
Which of the following is NOT a measure that helps to interrupt the transmission cycle of communicable diseases?
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Which of the following is a key principle of prevention of communicable diseases?
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Which of the following is NOT a way to break the chain of infection at the portal of exit?
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What is the difference between prevention and control of communicable diseases?
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Which of the following is the best way to prevent fecal contamination of water sources?
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Which of the following is NOT a food hygiene measure to break the chain of infection?
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Which of the following is a vector control measure to break the chain of infection?
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Which of the following is NOT a way to protect the natural host defense against infection?
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Which of the following is a way to break the chain of infection at the mode of transfer?
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Which step in the chain of infection involves the pathogen leaving the host's body?
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What is the term for the place where the infectious agent normally resides before infecting a new host?
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Which of the following is NOT a characteristic that affects the virulence of a microorganism?
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What term is used to describe humans or animals that serve as reservoirs for infectious agents?
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Which of the following is NOT a type of reservoir mentioned in the text?
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Which of the following is an example of an infective agent mentioned in the text?
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Study Notes
Breaking the Chain of Infection
- The chain of infection consists of six links: Infectious agent, Reservoir, Portal of exit, Mode of transmission, Route of entry, and Susceptible host.
- Breaking the chain of infection can be achieved through proper hand hygiene, use of gloves, standard precautions, isolation techniques, and disinfection.
Reservoir of Infection
- A reservoir is the place where the infectious agent is normally present before infecting a new human.
- Types of reservoirs include: Human, Animal, and Non-living (air, water, food, soil).
- Humans and animals that serve as reservoirs for infectious agents are known as infected hosts.
Portal of Exit
- The portal of exit is the route by which a pathogen leaves the body of its host.
- Examples of portal of exit include: Secretions, Faeces, Blood, Urine, Sputum.
Mode of Transmission
- Modes of transmission include: Direct contact, Indirect contact, Airborne, and Vector-borne transmission.
- Prevention of contamination can be achieved through proper hand hygiene, use of standard precautions, and disinfection.
Susceptible Host
- A susceptible host is an individual who is not immune to a particular infectious agent.
- Protecting the susceptible host can be achieved through: Good nutrition, Good hygiene, Adequate sleep, Decreased stress, and Proper hand hygiene.
Prevention and Control of Communicable Diseases
- Prevention refers to measures that are applied to prevent the occurrence of a disease.
- Control refers to measures that are applied to prevent transmission after the disease has occurred.
- Principles of control and prevention should be directed towards: Attacking the source, Interrupting the transmission cycle, and Protecting the susceptible host.
Isolation
- Isolation is the separation, for the period of communicability, of infected persons or animals from others to prevent the direct or indirect transmission of the communicable agent.
- Isolation is not indicated for every infection, but it is important for severe and easily transmitted diseases.
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Description
Test your knowledge on ways to break the chain of infection by understanding interventions like proper hand hygiene, use of gloves, and isolation techniques. Learn how to prevent contamination through handling sharps correctly, disinfection, and more.
