Orthobunya FERDIG Flashcards
All Bunyaviruses are transmitted by mosquitoes
F
– mainly mosquito or tick vectors
Bunyaviruses cause oral infection
F
The virus causing severe fever and thrombocytopenia syndrome is transmitted
T
Phlebovirus causing rift valley fever
Several bunyaviruses are zoonotic agents
T
- Hantaviruses
- Rift Valley fever virus
- Crimean-Congo hemorrhagic fever virus
Serological cross-reactions are frequent between related bunyaviruses
T
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All bunyaviruses are vectored by insects
F
-Hantavirus genus within the Bunyaviridae family is primarily transmitted to humans through inhalation of aerosolized virus particles from rodent feces, urine, or saliva
All bunyaviruses are vectored by ticks
F
Orthobunyaviruses are transmitted by haematophagous arthropods
T
-hematophagous (blood-feeding) arthropods, such as mosquitoes, midges, or ticks.
Several virus species belong to Bunyaviridae family, many present only in tropical regions.
T
Bunyaviruses are typically arboviruses
T
Bunyaviriuses has good antigens and good immune reaction
T
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The Rift Valley Fever virus causing severe fever and thrombocytopenia syndrome is transmitted by tick
T
Phlebovirus: Rift Valley Fever, severe fever and thrombocytopenia syndrome
The Aino virus causes foetal development problems and abortion in sheep
T
Akabane virus is zoonotic
F
Akabane virus causes foetal damages in dogs
F
- Turkey; cattle, sheep, goat;
Akabane disease virus causes foetal damages in sheep
T
Abortions and foetal malformations are the most typical signs of Akabane disease
T
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The Akabane disease is mainly seen in geese
F
-cattle, sheep, goat
The Akabane disease can cause abortion in sheep
T
?
The main symptoms of the akabane disease are foetal development disorders
T
?
The main symptoms of akabane disease are the malformation of the fetus
T
?
Akabane, Aino and Schmallenberg viruses cause similar disease in ruminants
T
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Akabane occurs in South-West Africa and is a disease of swine
F
In Asia, Africa and Australia
Causes diseases in: sheep, cattle, goat, turkey
Schmallenberg virus causes disease only in Suffolk sheep breed
F
- Suffolk, Texel, Blue Texel
- Dairy, Flevolander
- Swifter, Blessumer
- cross-breeds
Schallenberg virus causes foetal damages in humans
F
-Ø human
Schmallenberg virus causes foetal development problems more frequently in cattle than in sheep
F
Sheep is more sensitive, in cattle congenital disorders are rarely seen
Schmallenberg virus is present worldwide
F
- europe
Human is a competent host of Rift Valley fever virus i.e. the viraemic titre is high enough to infect the vector
T
The Rift valley fever virus damages the blood vessels thus causes haemorrhages
T
Wild rabbits are reservoirs of Rift valley fever virus
F
Rift valley fever is a human only disease
F
most commonly seen in domestic animals ( cattle, buffalo, sheep, goats, camels)
Nairobi sheep disease causes generalized infection in the animals
T
Vaccines are available in endemic regions to prevent Nairobi sheep disease
T
Nairobi sheep disease leads to abortion in the infected pregnant animals
T
Nairobi sheep disease causes haemorrhagic enteritis in the infected animals
T
Small rodents serve as reservoir hosts of Hantaviruses
T