Mosquitoes and Zoonoses Flashcards Preview

RUSVM Epidemiology 2016 > Mosquitoes and Zoonoses > Flashcards

Flashcards in Mosquitoes and Zoonoses Deck (23):
1

How are most disease acquired by mosquitoes

Blood meal

2

How are disease transmitted by mosquito?

During feeding

3

What viruses make up the Equine Encephalitis viruses

Western Equine Encephalitis
Eastern Equine Encephalitis
Venezuelan equine encephalitis

4

What do equine encephalitis viruses cause in horses and humans?

Encephalitis and fever

5

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

Birds

6

What is the enzootic reservoir for Venezuelan Equine Encephalitis?

Rodents

7

What is the epizootic reservoir for Venezuelan Equine Encephalitis?

Horses

8

Incidental hosts

dead end hosts that cannot infect mosquitoes

9

What is the enzootic reservoir cycle for the Encephalitis viruses?

Wild birds and mosquitoes

10

What is the epizootic cycle for Eastern encephalitis virus?

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

11

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

Eastern

12

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

Fever, Anorexia, lethargy
Excitability, drowsiness, paresis, seizures, coma

13

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

GI disease
Hepatits

14

What are the clinical signs of all EEVs in humans?

Flu-like illness
encephalitis
Coma
death

15

What is the enzootic cycle for VEEV?

Rodents and mosquitoes

16

What is the clinical sign for VEEV in equines?

Peracute death

17

What are the cliinical signs of VEEV in humans?

Fever
Neurological signs

18

How do you prevent VEED?

Report
Sentinel surveillance
Similar control methods to WEEV and EEEV

19

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

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

20

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

Asymptomatic
Fever
Neuroinvasive disease

21

How is WNV spread?

Bite of an infected mosquito

22

West Nile Virus secondary transmission?

bloodborne infection
lab exposure
breast milk

23

What are the clinical signs of Chikungunya?

Fever
Headache
Fatigue
Nausea
vomiting
muscle pain
rash
joint pain