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RUSVM Epidemiology 2016 > Mosquitoes and Zoonoses > Flashcards

Mosquitoes and Zoonoses Flashcards

1
Q

How are most disease acquired by mosquitoes

A

Blood meal

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2
Q

How are disease transmitted by mosquito?

A

During feeding

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3
Q

What viruses make up the Equine Encephalitis viruses

A

Western Equine Encephalitis
Eastern Equine Encephalitis
Venezuelan equine encephalitis

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4
Q

What do equine encephalitis viruses cause in horses and humans?

A

Encephalitis and fever

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5
Q

What are natural reservoirs for Western and Eastern Equine Encephalitis Viruses?

A

Birds

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6
Q

What is the enzootic reservoir for Venezuelan Equine Encephalitis?

A

Rodents

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7
Q

What is the epizootic reservoir for Venezuelan Equine Encephalitis?

A

Horses

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8
Q

Incidental hosts

A

dead end hosts that cannot infect mosquitoes

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9
Q

What is the enzootic reservoir cycle for the Encephalitis viruses?

A

Wild birds and mosquitoes

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10
Q

What is the epizootic cycle for Eastern encephalitis virus?

A

Between birds and incidental hosts (horses, humans, swine, ratites)

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11
Q

Which virus is the most virulent of the Equine Encephalitis viruses?

A

Eastern

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12
Q

What are the clinical signs of Equine Encephalitis viruses in equines?

A

Fever, Anorexia, lethargy

Excitability, drowsiness, paresis, seizures, coma

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13
Q

What are the clinical signs for EEEV in Swine and Ratites?

A

GI disease

Hepatits

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14
Q

What are the clinical signs of all EEVs in humans?

A

Flu-like illness
encephalitis
Coma
death

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15
Q

What is the enzootic cycle for VEEV?

A

Rodents and mosquitoes

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16
Q

What is the clinical sign for VEEV in equines?

A

Peracute death

17
Q

What are the cliinical signs of VEEV in humans?

A

Fever

Neurological signs

18
Q

How do you prevent VEED?

A

Report
Sentinel surveillance
Similar control methods to WEEV and EEEV

19
Q

What are the clinical signs for West Nile Virus in horses?

A

Neurological signs: Ataxia, hypermetria, weakness, paresis, recumbency, death

20
Q

What are the clinical signs of West Nile Virus in humans?

A

Asymptomatic
Fever
Neuroinvasive disease

21
Q

How is WNV spread?

A

Bite of an infected mosquito

22
Q

West Nile Virus secondary transmission?

A

bloodborne infection
lab exposure
breast milk

23
Q

What are the clinical signs of Chikungunya?

A 
Fever
Headache
Fatigue
Nausea
vomiting 
muscle pain 
rash 
joint pain

RUSVM Epidemiology 2016 (20 decks)

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