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picornavirus
Structure:
- small, cytoplasmic, plus-strand RNA ~7.5 kB
- no envelope, 30 nm icosahedral capsid
Epidemiology:
- found in mammals & birds
- humans serve as natural hosts
Clinical manifestations:
- most infections are asymptomatic
- some picornaviruses cause mild illnesses
- a few serotypes cause diseas of the central nervous system, heart, skeletal muscles, &/or liver [2]
Laboratory:
- picornavirus antigen
- picornavirus in stool by electron microscopy
General
picornaviridae
Properties
KINGDOM: virus
GENOME-TYPE: RNA
SINGLE-STRANDED
POSITIVE-STRAND
GENOME-SIZE: 7.2-8.4 kB
ENVELOPE: NONE
CAPSID-SYMMETRY: ICOSAHEDRAL
References
- Wikipedia: Picornavirus
https://en.wikipedia.org/wiki/Picornavirus
- Yin-Murphy M, Almond JW
Chapter 53: Picornaviruses
In: Medical Microbiology. 4th edition.
https://www.ncbi.nlm.nih.gov/books/NBK7687/