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Microbiology > Zoonoses > Flashcards

Zoonoses Flashcards

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Biology 101 flashcards
1
Q

What is the cause of Q fever?

A

Coxiella burnetti
An intracellular organism that survives and multiplies in the phagocyte
Eventually the cell ruptures releasing more organism

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2
Q

Which animals commonly transmit Q fever to humans?

A

Goats, sheep and cattle

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3
Q

How is Q fever generally transmitted to humans?

A

Inhalation

Less commonly: ingestion and direct contact

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4
Q

What is Q Fever?

A

Systemic infection involving lungs and reticuloendothelial system

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5
Q

What is the incubation time for Q fever?

A

9-20 days

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6
Q

What are common symptoms of Q fever?

A 
fever
chills
headache
pneumonitis
Hepatosplenomegaly
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7
Q

How is Q fever diagnosed?

A

Serologically

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8
Q

What microbe causes tularemia?

A

Francisella tularensis

Small, nonmotile coccobacillus

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9
Q

What are the typical hosts for Francisella tularensis?

A

rodents and bloodsucking arthropods

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10
Q

What animals are the most common reservoirs of Francisella tularensis?

A

rabbits
ticks
muskrats

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11
Q

How is Tularemia transmitted to humans?

A

contact with tissue or body fluids
infectious aerosols
bites
undercooked meats

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12
Q

What is the incubation period for Francisella tularensis?

A

3 to 5 days

Skin papule forms at site of entry

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13
Q

Describe Tularemia

A 
plague-like disease
fever
lymphadenopathy
ulcerated skin lesions
highly infectious
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14
Q

What lab precautions need to be taken when Tularemia is suspected?

A

Growth on culture needs to be under biosafety level 3 procedures

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15
Q

How is Tularemia diagnosed?

A

serology

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16
Q

Describe the most common spp of Pasturella

A

P. multocida
nonmotile
gram negative
coccobacillus

17
Q

Which animals typically carry Pasturella?

A

domestic and wild animals

18
Q

How are human infections of pasturella acquired?

A 
animal bites (65% from cats)
sometimes from a non-bite exposure
19
Q

What is the clinical presentation of pasturella?

A

focal soft tissue infection within hours of the bite/scratch
fever
lymphadenopathy

20
Q

What animals typically harbour brucella?

A 
hoofed animals (ungulates) and dogs
primary in domesticated animals
21
Q

How is brucella transmitted to humans?

A

direct contact with infected tissues
ingestion of contaminated meat or dairy
inhalation of infectious aerosols

22
Q

What is the incubation period for brucella?

A

weeks to months

23
Q

What are symptoms of brucella?

A 
night sweats
fever 
malaise
weaness
myalgias

Microbiology (12 decks)

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