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31 Cards in this Set
- Front
- Back
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Flavivirus
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West Nile Virus
St. Louis Encephalitis Virus |
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True or False
WNV serologic tests cross react with EEE virus |
False
WNV cross reacts with St. Louis Encephalitis Virus |
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True or False
WNV cross reacts with SLE virus serologic tests |
True
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What is the primary vector of
1. WNV 2. SLE Virus 3. EEE Virus 4. WEE Virus 5. VEE Virus 6. LACV |
1. Culex spp (also Aedes, Anopheles, and others)
2. Culex spp 3. Culiseta melanura 4. Culex tarsalis 5. mosquito 6. Aedes triseriatus (eastern treehole mosquito) |
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Who shows disease with WNV
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humans
horses birds |
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#1 cause of arboviral dz in US
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WNV
(flavivirus) |
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what are amplifiers
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hosts with high viral load
may not be symptomatic |
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1. who are the carriers of WNV
2. who are the vectors 3. case fatality rate in horses |
1. song birds
2. Culex spp primarily (also Aedes spp, Anopheles spp, and others) 3. 30% (not too bad) |
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Describe WNV in birds
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corvids (crows/ ravens/ jays)
- highest fatility Raptors - owls have high mortality rate - retinal lesions chickens/ other birds used as surveillance |
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West Nile Virus
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Know WNV distribution
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St Louis Encephalitis Virus Neuroinvasive Cases
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Know SLEV distribution
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Know EEE distribution
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Eastern Equine Encephalitis distribution
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Know Arboviruses and their vectors/ reservoirs/ illness (humans and animals)/ geography
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Which arbovirus has a very high (90%) case fatality rate in horses
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EEE
(Togavirus) |
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Small rodents are the main vector for which virus/viruses
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La Cross Encephalitis (bunaya)
Venezuelan equine encephalitis |
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horses with ______ should be quarantined
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VEE
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Which can you vax for
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EEE
- annually (or more often) - 3-4 wks prior to foaling - 3, 4, & 6 mo EEE VEE WNV |
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which virus is associated with careless irrigation
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WEE
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Culiseta melanura is the vector for _______
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EEE
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which affect humans only
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SLEV (flavi)
LACV |
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A horse is presented with signs of encephalitis in TX.
Which virus(es) are on your ddx |
WEEV (seen anywhere west of miss river)
VEEV (rare) WNV NOT SLEV B/C ONLY HUMANS AFFECTED |
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A horse in Florida is showing signs of encephalitis.
What virus(es) are on your ddx |
WNV
EEE VEE (rare) not LACV (b/c only humans affected) |
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A human living in Indiana is showing signs of encephalitis
which virus(es) are on your ddx |
SLEV
WNV WEE |
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a child in south carolina is showing signs of encephalitis.
which virus(es) are on your ddx |
LACV
WNV EEE |
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Culex tarsalis is the vector of
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WEE
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Culiseta melanura is the vector of
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EEE (Toga)
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Which virus is transmitted by a vector which feeds exclusively on birds but will move to forested areas in the late summer/ fall.
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EEE (toga)
culiseta melanura is the spp |
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when do cases of EEE occur (time of year)
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late summer/ fall
b/c mosquito (culiseta melanura) moves from swamps to forested areas |
