Poxviridae Flashcards
poxviridae meaning
pock-scar
Chordopoxvirinae genera (genuses)
Orthopox-, Parapox-, Avipox-, Capripox-, Leporipox-, Suipox-, Cervidpox-, Yatapox-, Molluscipoxvirus genus
poxviridae generas
Chordopoxvirinae and Entomopoxvirinae
Entomoxpoxvirinae genuses and A sp
insect poxviruses (A, B, C)
Morphology
linear dsDNA
complex capsid with lipids
Morphology variants
intracellular, non-enveloped virion, released by cell lysis
intracellular, enveloped (2 layers) virion, released by membrane fusion
penetrates to new cells by membrane fusion
form are infectious, attachment to different cell surface receptors
resistance
usually good
Chloroform inactivates all,
ether only capri-, para- and leporipoxviruses
Biological properties
mainly stenoxen
Orthopox, Parapox – zoonoses
embryonated eggs – CAM inoculation
Baltimore I
multiplies in the cytoplasm
infection is….
airborne, contact, arbo
cell proliferation
papule (cell proliferation) → pustule → scab → scar
Antigenic properties
strong antigens (except Parapox) – long immunity variolla=vaccinia
diagnosis
clinical signs
isolation – embryonated egg
EM (papulae)
Orthopoxvirus genus (name)
ortho=real
Orthopoxvirus genus (spp)
cowpox, buffalopox, camelpox, ectromelia, variola, vaccinia, monkeypox
Orthopoxvirus genus (A sp)
cattle buffalo camel mice human rodent monkey
Cowpox
Cowpox (cattle skin, teats)
rodents → cat → human
Buffalopox
buffalo skin
Camelpox
camel skin, eye, pneumonia
ectromelia
mice, skin – loose of legs, generalized
Variola
smallpox: human - skin, pneumonia
Vaccinia
mutant cowpox – vaccine against Variola
Monkeypox
monkey, rodent, human
Parapoxvirus genus (name)
para=like
Parapoxvirus genus (spp)
Pseudocowpox Bovine pqpular stomatitis Contagious ecthyma Squirrel parapoxvirus Sealpox
Parapoxvirus genus (A sp)
cow, calf human lamb squirel seal
Pseudocowpox
cow: teat scabs
humans: milker’s nodule
Bovine papular stomatitis
calf: oral scabs
Contagious ecthyma, orf
lamb: mouth, lips - scabs
humans: skin, lips, eye
Squirel parapoxvirus
skin lesions (head, lips, eyes)
Avipoxvirus genus (meaning)
Avis=bird
Avipoxvirus genus (spp)
Fowlpox Canarypox Pigeonpox Psittacinepox Turkeypox
Avipoxvirus genus (dis)
skin-, mucosal scabs,
pneumonia, generalized forms
Capripoxvirus genus (name)
capra=goat
Capripoxvirus genus (spp)
Sheep pox
Goat pox
Lumpy skin disease
Sheep pox
skin – wool loss, pneumonia, generalized
Lumpy skin disease
cattle, wild ruminants
Capripoxvirus genus (A sp)
goat
sheep
cattle
wild RU
Leporipoxvirus genus (name)
lepus=rabbit
Leporipoxvirus genus (spp)
Mycomatosis
Hare-fibroma virus
Shope-fibroma virus
Myxomatosis
rabbit (Oryctolagus)– myxomas, pneumonia
transmission: mosquitoes
Hare-fibroma virus
hare (Lepus) - tumors
Shope-fibroma virus
American cotton-tailed rabbit (Sylvilagus) - tumors
Suipoxvirus genus (name)
sus=pig
Suipoxvirus genus (spp)
swinepox
swinepox
skin papulas
transmission: lice
Poxvirus vectors
mosquitos and lices
Yatapoxvirus genus (spp+dis)
Yabapox: monkey tumors
Tanapox: human skin lesions
Yatapoxvirus genus (A sp)
monkeys and human
Molluscipoxvirus genus (spp, A sp and dis)
Molluscum contagiosum virus: human skin lesions