20 Questions
Which of the following best describes the role of disinfection in infection control?
Reducing the risk of animals/patients getting infected
What is the relative resistance to disinfection of prions?
Extremely resistant
Which of the following is NOT considered highly resistant to disinfection?
Gram positive bacteria
What should be considered when using disinfectants?
All of the above
Which pathogen is highly susceptible to disinfection?
Mycoplasmas
What is the importance of contact time in disinfection?
It determines the effectiveness of disinfection
What is the general mechanism of action of disinfectants?
Causing damage to pathogens
What is the potential harm of some disinfectants?
They can cause hypersensitivity reactions
What should be included in an infection control plan?
All of the above
What is an example application for Streptococcus Equi?
Management of disease risk
Which of the following is true about outbreaks of S. equi?
Outbreaks often come from contaminated soil
How long can the S. equi agent survive in water?
4-6 weeks
When does the carriage risk of S. equi typically occur?
6 weeks after signs appear
Which of the following is NOT a measure for preventing S. equi infection?
Detection and treatment of carriers
What is the recommended cleaning process to remove organic material before disinfection?
Cleaning followed by disinfection
Which of the following is true about the survival of the S. equi agent on pastures?
No evidence of survival on pastures
Which of the following is NOT an approach to managing Canine parvovirus?
Barrier controls
What is the primary route of infection for Salmonella?
Feeding on infected organic matter
What should be done with isolated animals during infection control for Salmonella?
They should be isolated last during sequencing
What should be done before disinfection to reduce the effectiveness of the disinfectant for infection control?
Reduce organic material
Study Notes
Disinfection in Infection Control
- Disinfection plays a crucial role in infection control by reducing the number of microorganisms on surfaces, thereby preventing the spread of infection.
- The effectiveness of disinfection depends on various factors, including the type of disinfectant, concentration, contact time, and surface type.
Resistance to Disinfection
- Prions are highly resistant to disinfection, requiring specialized inactivation methods.
- Bacterial spores are also highly resistant to disinfection, while non-enveloped viruses are moderately resistant.
- Lipid-enveloped viruses, such as HIV, are relatively susceptible to disinfection.
Disinfectant Considerations
- When using disinfectants, factors such as concentration, contact time, and surface type should be considered to ensure effective disinfection.
- The importance of contact time lies in allowing the disinfectant to interact with the microorganism long enough to inactivate it.
Mechanism of Action and Potential Harm
- Disinfectants work by disrupting the cell membrane or inhibiting essential cellular processes, leading to the inactivation of microorganisms.
- Some disinfectants can be harmful to humans, animals, or the environment, so it is essential to handle them carefully and follow instructions.
Infection Control Plans
- An infection control plan should include strategies for prevention, detection, and response to outbreaks, as well as protocols for disinfection and sanitation.
Streptococcus Equi (S.equi)
- S.equi is a bacterium that can cause strangles in horses, and is highly susceptible to disinfection.
- An example application for S.equi is in equine veterinary medicine.
- Outbreaks of S.equi are often linked to contaminated water sources, and the bacteria can survive in water for up to 2 months.
- The carriage risk of S.equi typically occurs in the first 4-6 weeks after infection.
- Vaccination is an effective measure for preventing S.equi infection.
Salmonella
- The primary route of infection for Salmonella is through the fecal-oral route, often via contaminated food or water.
- Isolated animals should be kept separate from the rest of the population during infection control for Salmonella.
- Before disinfection, it is essential to remove organic material to reduce the effectiveness of the disinfectant.
Canine Parvovirus (CPV)
- One approach to managing CPV is through vaccination and proper sanitation and disinfection protocols.
General Infection Control
- Cleaning and disinfection are crucial components of infection control, and should be performed in a specific order to maximize effectiveness.
- Removing organic material before disinfection is essential to ensure the effectiveness of the disinfectant.
Test your knowledge on infection control and biosecurity with this quiz! Learn about the importance of disinfection in managing and reducing the risks of infection in various settings. Explore topics such as the management of animal and material movement, infection control processes, and more. Put your skills to the test and enhance your understanding of infection control measures.
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