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Flashcards in Arboviruses Deck (21)
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1

Enzootic

use mammals or birds as natural hosts, humans may be a dead end

2

Name four main viral families of arboviruses.

Family: Togaviridae
Genus: Flavivirus
G: Alphavirus
F: Bunyavirus
G: Bunyavirus
G: Phlebovirus

3

Name diseases in T. Flavivirus.

~ Dengue
~ Yellow fever
~ Japanese encephalitis
~ West Nile fever

4

Name diseases in T. Alphavirus.

Chikungunya

5

Name diseases in B. Bunyavirus.

LaCrosse virus

6

Name diseases in B. Phlebovirus.

Rift Valley Fever

7

Extrinsic incubation period

time between blood-feeding and transmission - varies with virus, temp, mosquito
generally 8-14 days

8

Transovarial transmission

transmission from female mosquito to eggs, offspring effected, v rare

9

Arthralgia

joint pain

10

E glycoprotein

associated with receptor binding, antibody response, haemagglutination
(dengue)

11

E&M proteins

span lipid envelope, form outer protective later
(dengue)

12

7N (non-structural) proteins

associated with viral replication and assembly
(dengue)

13

Dengue

...

14

Diapause

period of suspended development in an insect, especially during unfavourable environmental conditions

15

Yellow fever

Zoonosis
3 cycles:
~ Jungle (Aedes africanus + monkeys)
~ Urban (Aedes aegypti + Human)
~ Savannah/Intermediate (Aedes spp. and non-human/human primate_

16

Japanese encephalitis

~ zoonosis
~ Culex mosquitoes
~ herons/egrets are maintain hosts
~ pig amplifying hosts

17

West Nile Virus

Enzootic
~ cycle between passeriform birds and Culex mosquitoes
~ spillover transmission to humans and equids (dead ends)

18

Chikungunya

~ zoonosis + emerging alphavirus
~ cycles between monkeys, birds, cattle + rodents

19

Rift Valley Fever

Zoonosis
~ domestic livestock and over 30 mosquito spp. incl. Aedes, Culex + Anopheles

20

Zika

~ transmitted by Aedes aegypti
~ occurs in wild and urban areas

21

Haemolymph

mosquito body cavity