arboviruses Flashcards

1
Q

All arboviruses are ___ viruses?

A

RNA

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2
Q

______ is the most common arbovirus causing human disease in subtropical and tropical regions globally.

A

dengue

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3
Q

What does arbovirus mean?

A

virus with arthropod vector

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4
Q

What 4 clinical syndromes do arboviruses cause?

A

systemic febrile illness
fever with arthritis
encephalitis
hemorrhagic fever

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5
Q

What specific arboviruses are responsible for systemic febrile illness?

A

chikungunya
O’nyong-nyong
Ross river
Dengue

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6
Q

What specific arboviruses are responsible for fever with arthritis?

A

chikungunya
O’nyong-nyong
Ross river

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7
Q

What specific arboviruses are responsible for encephalitis?

A

Japanese encephalitis, west nile, venezuelan equine encephalitis, EEE, Western EE, Murray Valley encephalitis, Powassen Encephalitis

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8
Q

What specific arboviruses are responsible for hemorrhagic fever?

A

Yellow fever, Dengue, Rift Valley fever, chikungunya

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9
Q

EEE family and genus

A

Togaviridae

alphavirus

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10
Q

What four alphaviruses cause encephalitis?

A

EEE, VEE, WEE, Everglades

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11
Q

What season is EEE most prevalent in?

A

spring and summer

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12
Q

which is more likely to cause encephalitis?

A

EEE

VEE is least likely

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13
Q

Relative mortality rates for EE?

A

EEE»VEE»WEE

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14
Q

vector for EEE?

A

mosquitos, preferentially feed on birds, humans are accidental host

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15
Q

Review: in viral encephalitis, what will the CSF look like?

A

mostly lymphocytes

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16
Q

Japanese Encephalitis virus endemic areas?

A

India, Nepal, Indonesia, SE Asia, Thailand,

Philippines

17
Q

Japanese Encephalitis virus vector

A

culex mosquito–> nightime feeder

18
Q

Japanese Encephalitis virus is a _____

A

flavivirus

19
Q

Japanese Encephalitis virus season

A

early spring, peaks in June

year round in some parts of India

20
Q

Japanese Encephalitis virus prevention

A

there are 2 vaccines available

21
Q

yellow fever virus family and genus

A

fam: Flaiviviridiae
genus: Favivirus

22
Q

yellow fever virus locations

A

South America and Africa

23
Q

what is viscerotropic yellow fever?

A

yellow fever you get from the vaccine

24
Q

Dengue family and genus

A

fam: Flaiviviridiae
genus: Favivirus

25
Q

Dengue fever tx:

A

supportive care

26
Q

Dengue fever serotypes?

A

1, 2, 3, 4

27
Q

Dengue sx

A

range from febrile illness to severe hemorrhagic fever

28
Q

Dengue vector

A

urban mosquito: day time feeder; feeds preferentially on humans