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39 Cards in this Set
- Front
- Back
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Influenza and parainfluenza cause viremic or nonviremic infections
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nonviremic
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What paramyxoviruses are viremic? (2)
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Mumps and Measles
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What Ig is associated with Measles and Mumps?
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IgG
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Is Mumps or Measles related to the Parainfluenza?
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Mumps
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Incubation of Mumps
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18-21 days
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symptoms of measles (4)
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prodormal fever, anorexia, swelling of parotid, meningitis
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Which of the Mumps and Mealses has subclinical infections and what percent
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Mumps 30%
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Immunization of Mumps (live / inactivated)...gives immunity for how long
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Live for mumps
10 year immunity |
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What is the most contagious disease known? why
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Measles...no subclinical
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how is the mumps infection transmitted
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via saliva to the resp tract to viremic to the salivary glands
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How do the measles epidemics occur? (think pop infected)
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via loss of herd immunity
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what are the symptoms of measles (5)
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prodormal rash, fever, koplik spots, conjunctivitis, photophobia
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If the mumps infection is properly fought by the host, it creates an immunity for how long?
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life
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what is the incubation period for measles
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14 days
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when does viremia start?
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3 days before rash (incubation period ends)
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Virus for mumps is secreted in...
Virus for measles is secreted in... |
mumps...saliva
measles...saliva and urine (before rash forms) |
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fighting infection gives how long of an immunity
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life
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what is a characteristic pathology of measles
how does it work |
multi-nucleated giant cells...
made by viral antigens that causes fusion of membranes of cells |
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what effect does measles have on cell-mediated immunity? (tb tests come out?)
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suppresses...tb tests are negative even if the person has abs for it
ANERGY |
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do immune individuals secrete virus when infected again (measles)
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no
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in undeveloped countries, giving what to malnourished measles patients helps reduce mortality? (centrum)
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vit a
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SSPE is what
associated with what virus? |
Subacute Sclerosing PanEncephalitis
measles |
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what does SSPE cause
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insidious onset of intellectual deterioration, psychological disturbances with slow decline interrupted by remission...fatal with paralysis and blindness
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Is SSPE slow virus?
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Yes! they are hetrogenous...can be measles or JC...
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What are examples of slow viruses (4)
what characteristics are common |
SCRAPIE, KURU, Creutzfeld-Jacobs, Polyomavirus
long incubation time, progressive abnormalities, localized to organ, |
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SCRAPIE affects what?
What is the virus and what is it immune to |
slow viral disease that affects sheep CNS cerebellum
can't be killed by UV, formaldehyde, and proteolytic enzymes Prions...proteins that are resistent to breakdown |
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KURU is what?
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slow virus disease that affects humans CNS cerebellum
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KURU's main symptom and way of transmission
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Spongiform Encephalopathy when injecting monkeys with the brain of the infected human...ingestion (cannibalism)
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Polyomavirus include two types
what are the symptoms (4) |
BK and JC.
BK causes mild infections in children JC causes Progressive Multifocal Leukoencephalopathy in immune suppressed individuals leading to mem loss, poor speech, incoordination, white matter damage |
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arboviruses include viruses from what two group
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flavi and toga
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are all flavi and toga arborviruses
which did we learn about |
rubella is a toga that is not arbo
hep c is a flavi that is not arbo |
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what are arbovirus shape, strand etc
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single + stranded RNA that has a icosahedral shape
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intrinsic incubation occurs where and how long
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occurs in humans and lasts a week
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extrinsic incubation occurs where and how long
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occurs in arthopod and lasts 14 days
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which 2 are the flavi arboviruses
which 2 are the toga arboviruses |
st. louis and west nile
western and eastern equine |
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which is the most common arbovirus
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easter equine encephalitis
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what is the def of dead end host and what are the deal end hosts for arboviruses
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dead end host are the hosts which do not allow for transmission any farther
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st louis and west nile affect which subpopulation more
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seniors above 50
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eastern and western equine encephalititis affect which subpopulation more
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children
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