Biosecurity 1 Flashcards

1
Q

What are the hierarchy of controls for workplace management of hazards from least to most effective?

A

PPE
Admin controls
Engineering controls
substitution
elimination

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2
Q

How does elimination help manage hazards?

A

physically remove hazard

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3
Q

How does substituion help manage hazards?

A

replace hazard

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4
Q

How do engineering controls help manage hazards?

A

isolate people from the hazard

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5
Q

How do administration controls help manage hazards?

A

change the way people work

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6
Q

How does PPE help manage hazards?

A

protect worker

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7
Q

What are the 3 elements of transmission of infectious agents?

A
  1. a source (or reservoir)
  2. susceptible host with entry portal receptive to agent
  3. mode of transmission for agent
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8
Q

I ______ create a program to _______ the risk of ________ diseases that are preventable

A

can/should
minimize
many

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9
Q

How can a pathogen get from the infected to clean cows?

A

food
water
close contact

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10
Q

Are sheep at a higher or lower risk than the cow-to-cow?

A

Depends on the disease

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11
Q

Explain the epidemiological triad of causal factors

A

agent
environment
host

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12
Q

What are some of examples of agent causal factors of disease?

A

virulence
infectivity

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13
Q

What are some environmental examples causing disease?

A

sanitary conditions, social context

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14
Q

What are some of examples of agent causal factors of disease?

A

genetic susceptibility, resiliency, nutritional status

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15
Q

Define biosecurity

A

cumuluative measures can/should be taken to keep disease from occurring and prevent transmission of disease with policies and hygienuc practices designed to prevent incidents of infectious dx

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16
Q

Define stringent bioexclusion

A

keep agent out

17
Q

Define ruthless biocontaminment

A

keep agent in

18
Q

Define early detection/vigilant surveillance

A

find out who needs to be contained or excluded

19
Q

What type of environment and what type of pressure would you want in a surgical suite?

A

keep air out - stringent bioexclusion- positive pressure

20
Q

What type of environment and what type of pressure would you want in an isolation unit?

A

Keep agent in - ruthless biocontainment - negative pressure

21
Q

Explain BSL 1-4 use in vet med

A

BSL 1: appropriate for work with well-characterized agents which dont cause disease in healthy animals or people

BSL 2: appropriate for work involving agents of moderate potential hazard including microbes causing mild disease where treatment/vax exist

BSL 3: appropriate for work involving microbes which can cause serious disease that could be fatal where treatment or vaccine exists

BSL 4: highest level of biosafety precautions is appropriate for work with agents that cause severe/fatal disease which NO treatment exists

22
Q

Define Nosocomial (Healthcare Associated Infection/Hospital Acquired Infection (HAI)

A

infection that is acquired in a hospital or other health care facility

23
Q

Define Associated/Acquired Infection (CAI)

A

infection contracted outside of health care setting or an infectious present on admission

24
Q

Define zoonoses

A

infection that transmits from animal to man or man to animal

25
Q

What is used to prevent a disease or infection that is preventable?

A

SKA

26
Q

What are three factors that influence infection control plan

A

knowledge of pathogen
identification of infection or disease
signs and consequences of infection vs disease

27
Q

What are some tools in your toolbox for an infection control plan?

A

design/layout of facilities
cleaning and disinfection protocols
enhancing the health status of animals (young, old, very sick)
ability to change behavior of people

28
Q

You should _______ first then _______

A

clean
disinfect

29
Q

What are the 6 steps to cleaning for example your dirty boots after cow lab? What about a surgical table?

A
  1. remove gross organic matter
  2. apply detergent + water
  3. rinse with water
  4. apply disinfectant (chemical) and allow wet contact time
  5. May rinse with water
  6. dry
30
Q

What is one of the most effective ways to prevent transmission of disease

A

hand hygiene!

31
Q

What is the result if resistance is greater than pathogen load? What about conversely?

A

The animal will have a better chance at mounting an immune response and be able to fight off the pathogen
Immunosuppressed animals will have a more difficult time fighting the infection and will be more likely to fight off the disease

32
Q

Are most cases of hospital acquired infections due to decreased resistance, increased, pathogen load, or both?

A

both

33
Q

What are factors that influence resistance to disease?

A

Previous exposure to pathogen whether naturally or through vaccination
Maternal immunity in neonate
Adequate nutrition
Immunosuppression/stress
Genetic selection in animals

34
Q

What are factors that influence pathogen exposure?

A

Sanitation
Adequate ventilation
Presence or absence of infected/diseased animals
Presence or absence of vectors
Handwashing vs PPE

35
Q

What is the difference between PPE and barrier production

A

PPE (personal protective equiptment) protects YOU
Barrier protection protects PATIENTS from other PATIENTS and YOU

36
Q

Identify the 4 different colors seen in the VTH and which patients you should evaluate first?

A

Green - normal
Yellow - increased risk of getting infected such as neonates and immunosuppressed
Orange - increased risk of being infected such as non-healing wound
Red - highly contagious pathogen

SEE YELLOW PATIENTS FIRST