36 - Rhabdoviridae, Filoviridae Flashcards Preview

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Flashcards in 36 - Rhabdoviridae, Filoviridae Deck (11)
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1
Q

Rhabdoviridae

A
  • Morphology:
    • -ssRNA virus
    • Non-segmented
    • Ø helical capsid
    • Enveloped
    • Complete virions:
      • Bullet shaped
      • Incomplete
      • Truncated
  • Resistance: weak
  • Biological properties:
    • Baltimore V. – viral transcriptase
    • Cell-bound infections
    • CPE: weak – IF is necessary
    • Fish vesiculovirus: thermosensitive, 23°C optimum zoonoses
  • Antigenic properties:
    • Good antigens
    • Cross-reaction within genera
    • Vaccines (eg. rabies)
  • Diagnosis:
    • IF, isolation + IF
    • Experimental infection + IF
2
Q

Rhabdoviridae

List the different generas

A
  • Vesiculovirus genus
  • Lyssavirus genus
  • Ephemerovirus genus
  • Novirhabdovirus genus
3
Q

Rhabdoviridae

Vesiculovirus genus

A
  • Etymologi: vesicula
  • Vesicular stomatitis virus
    • Ungulates, humanes
    • America
    • Similar to foot & mouth disease, but infect horses (which foot & mouth disease does not)
4
Q

Rhabdoviridae

Lyssavirus genus

A
  • Etymologi: lyssa: rabies
  • Rabies
    • Genotypes:
      • Lagos bat
      • European bat
      • Australian bat
    • Neuroinvasive → behavior change (CNS), neuron encephalitis
    • Urban rabies: dog → humans
    • Sylvatic rabies: fox, wolf, faccoon, bat (in forest)
    • Accidental hosts: cat, horse, sheep, cattle
5
Q

Rhabdoviridae

Ephemerovirus genus

A
  • Bovine ephemeral fever
    • Short fever → less milk production
    • Mosquito-transmitted (Africa, Asia, Australia)
6
Q

Rhabdoviridae

Novirhabdovirus genus

A
  • Viral haemorrhagic septicaemia
    • Trout
    • Europe
  • Infectious haemopoetic necrosis
    • Salmon
    • Europe
7
Q

Filoviridae

A
  • Etymologi: filum: thread
  • Morphology:
    • -ssRNA genome
    • Helical capsid
    • Enveloped
  • Resistance: weak
  • Biological properties:
    • Baltimore V. – viral transcriptase
    • CPE: cytoplasmic inclusion bodies
    • Zoonoses! – bats are reservoirs
    • Mainly in Africa - Ebola
  • Antigenic properties:
    • Good antigens ⟷ rapid course of lethal disease
    • No cross reactions
  • Diagnosis:
    • Clinical symptoms
    • Isolation: EM, IF
8
Q

Filoviridae

List the different genera

A
  • Ebolavirus genus
  • Margurgvirus genus
  • Cuevavirus genus
9
Q

Filoviridae

Ebolavirus genus

A
  • Etymologi: ebola: Africal river
  • Ebola virus
    • Bats infect fruit → apes eat fruit → bush meat
    • Fast infection between humans
    • Severe haemorrhage, encephalitis
    • High mortality (>90%)
10
Q

Filoviridae

Marburgvirus genus

A
  • Etymologi: Marburg: Germany
  • Marburg virus
    • Monkey → human
    • Fever, meningoencephalitis
11
Q

Filoviridae

Cuevavirus genus

A
  • Etymologi: cueva: cave
  • Lloviu virus
    • Bat
    • Spain

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