MIC 541-Exam 5-Virology 28
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What does Cardiovirus cause?
What does Aphthovirus cause?
Foot and mouth disease
What are the possible outcomes of the poliovirus and their relative proportions?
- 90% asymptomatic
- 5-10% aseptic meningitis
- <5% minor non-CNS illness
- 1% Paralytic
What type of virus is poliovirus?
What are the reservoirs for enteroviruses?
What is the transmission route for Poliovirus?
- Fecal oral primarily
- Via: houseflies,wastewater and sewage
What can CNS invasive Poliomyelitis cause?
After ingestion of Poliovirus, what is the viruses action?
- Adheres to receptors in the oropharynx and intestine
- Multiples there sheds into the throat, feces and blood
How long do most poliovirus infections last?
Short term, mild
What causes flaccid paralysis in a poliovirus infection?
Viral infection of the CNS
What is post-polio syndrome?
Progressive muscle deterioration decades after infection
How often does post-polio syndrome occur?
25-50% of childhood polio cases
What are the symptoms of polio invasion of the spinal tissue?
- Muscle pain
- Meningeal inflammation
- Vague hypersensitivity
Is nervous tissue destroyed in polio patients?
No, just infected
What is the treatment for those infected with polio?
What are the vaccines available for Polio?
- IPV = inactivated polio vaccine or Salk vaccine
- Oral polio vaccine or Sabin vaccine
What polio vaccine is no longer used in the U.S.?
What type of vaccine is the Sabin vaccine?
Oral attenuated vaccine
When was worldwide eradication of Polio predicted?
What are the most common nonpolio enteroviruses?
How do other enteroviruses compare to polioviruses?
- similar infectious characteristics and epidemiology
- Less virulent
On rare cases what non-polio enteroviruses can cause paralysis, meningitis and encephalitis?
Echovirus and Coxsackievirus
What are the symptoms of Herpangina?
- High fever
- Sore throat
- Lesions in the oral cavity
What would you like to do?
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