4/28/17 Emerging infections Flashcards

1
Q

What is an infection that naturally occurs in an insect or animal host that also can subsequently infect humans?

A

-Zoonotic pathogen

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2
Q

T/F Salmonella is a zoonotic pathgoen

A

True

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3
Q

T/F Shiga like toxin producing E. coli is not a zoonotic pathogen

A

False

It is

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4
Q

T/F Rabies is a zoonotic pathogen

A

True

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5
Q

T/F Lyme disease Borrelia burgdorferi (tickbite) is a zoonotic pathogen

A

True

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6
Q

T/F Rocky mountain spotted fever (Rickettsia rickettsi) is a zoonotic pathogen

A

True

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7
Q

T/F West nile virus is a zoonotic pathogen

A

True

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8
Q

What is an emerging pathogen?

A
  • One that is new never before seen
  • A known infection emerging in new hosts or geographies
  • Infection that has always been there but not tested for
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9
Q

What virus is a new epidemic for the americas?

A

-Chikungunya virus

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10
Q

_______ of cases of chikungunya result in long-lasting relapsing arthralgia (>6 months).

A

> 50 %

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11
Q

What is the fatality rate of chickungunya?

A

-1/1000

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12
Q

What are the signs and symptoms of chickungunya?

A
  • HIgh Fever
  • Sever joint pain
  • Rash
  • Fatigue
  • Nausea
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13
Q

What is the origin of chikungunya?

A

-Tanzania

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14
Q

What is the carrier for chikungunya?

A

-Aedes aegypti mosquito

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15
Q

When is IgM antibody detection for chikungunya most sensitive?

A

-3-5 weeks post symptoms

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16
Q

Where was Zika virus discovered?

A

-Uganda

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17
Q

What is the vector of Zika?

A

-Aedes spp. of mosquito

18
Q

What is a major sign of Zika?

A

-Conjunctivitis

19
Q

What are four mechanisms of transmission of Zika?

A
  • Blood transfusions
  • Infected mosquito bite
  • Sexual transmission
  • Congenital
20
Q

What birth defect does Zika cause?>

A

-Microcephaly

21
Q

Can Zika virus be transmitted directly between patients?

A

Yes

22
Q

What is an emerging gastrointestinal pathogen?

A

-Cyclospora cayetanensis

23
Q

What is the vector for Cyclospora cayetanensis?

A

-Humans

24
Q

How do you diagnose Cyclospora cayetanensis?

A

-Stool

25
Q

When cyclospora oocysts are shed are they infective?

A

-No they are not infective

26
Q

What drug do you use to treat Cyclospora cayetanensis?

A

-Trimethoprim sulfamethoxazole

27
Q

Is there direct human to human transfer of Cyclospora cayetensis

A

No

28
Q

Where have all cases of MERS been located to?

A

-Arabian peninsula

29
Q

How is MERS likely spread?

A

-Respiratory secretions

30
Q

T/F Caregivers and household contacts can become infected from someone who has MERS

A

True

31
Q

Where does MERS come from?

A

-Bat origin

32
Q

What should you avoid to not get MERS?

A
  • Contact with ill travelers from the Arabian Peninsula

- Camel contact

33
Q

T/F MERS is a highly pathogenic respiratory virus

A

True

34
Q

T/F Patients body fluids also are highly infective

A

True

35
Q

What strain of Ebola is most deadly?

A

-Zaire

36
Q

T/F You shouldn’t clean a Zika patient’s teeth until they recover

A

True

37
Q

What are two emerging infections that are not a risk for dentistry?

A
  • Chikungunya

- Cyclospora

38
Q

T/F Most emerging infections are viral

A

True

39
Q

What are three less pressing emerging pathogens that are not direct human to human transmission?

A
  • Avian influenza
  • Borrelia miyamotoi
  • Anaplasma
  • Ehrlichia
40
Q

What are high risks of emerging infections in the dental setting?

A

MERS

  • Zika
  • Ebola
41
Q

What are four major outbreaks of Cyclospora?

A
  • Iowa and Nebraska
  • Texas
  • Texas
  • Multistate