Sterilisation and Disinfection, Ebola Flashcards

1
Q

What are the reservoir hosts for Ebola?

A

Bats

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2
Q

When are contact precautions used?

A

For infections that are transmitted by direct or indirect contact

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2
Q

What other virus that causes haemorrhagic fever is Ebola related to?

A

Marburg

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3
Q

How far do droplets travel?

A

Maximum of 1m

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3
Q

What is the major diagnostic used for Ebola?

A

PCR

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4
Q

When and where was Ebola first identified?

A

Zaire in 1976

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5
Q

What are the common solutions used for skin preps?

A

Alcohol and chlorhexidine

Alcohol and iodine

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5
Q

Does transmission of Ebola occur outside of clinical illness?

A

Only sexual transmission (after ~6 weeks after curing)

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5
Q

What are the current treatments in use?

A

Fluid and electrolyte control

Blood transfusions from recovered patients

Monoclonal antibodies (Zmapp)

SIR (will be trialled shortly)

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6
Q

What objects should be the focus of the cleaning process?

A

High touch areas

Equipment that has touched patients

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8
Q

What is an example of a semi-critical object?

A

GI endoscope

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8
Q

Why is an Ebola vaccine viable?

A

Neutralising antibodies arise to the virus

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10
Q

How does the pattern of the current outbreak differ from previous ones?

A

Where previous been in remote and isolated areas with poor access to healthcare, the current outbreak has spread to significant population centres

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12
Q

When are standard precaution in use?

A

With all patients, all the time

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13
Q

Why might the current estimated case fatality rate be an overestimation?

A

Because milder cases aren’t presenting to the overloaded healthcare facilities

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14
Q

What type of virus is Ebola?

A

Filovirus

SS-RNA

15
Q

What are the symptoms of Ebola?

A

Fever

Headache

Muscle pains

Diarrhoea and vomitting

Abdo pain

Maculopapular/haemorrhagic rash

16
Q

What is the difference betwen sterilisation and disinfection?

A

Sterilisation is removing all viable organisms including spores

Disinfection is eliminating many or all-pathogenic microbes with the exception of spores

17
Q

How big are droplets in size?

A

>5micrometres

19
Q

What are airborne precautions?

A

N95 mask

Negative pressure ventilation

Single room with door closed

20
Q

When do haemorrhagic symptoms present?

A

Late in infection

22
Q

How is Ebola transmitted?

A

Direct contact with bodily fluids that enter through broken skin and mucous membranes

Sexual

(NO AIRBORNE)

23
Q

When do Ebola symptoms start?

A

2-21 after infection

24
Q

Does Ebola persist on fomites?

A

No

25
Q

What three pathogens can become airborne?

A

TB

Measles

Varicella