Biomedical Engineering Reference
In-Depth Information
Chapter 40
Group II Viruses:
Single-Stranded (
)Sense DNA
1
“Everything should be made as simple as possible, but not simpler.”
Albert Einstein
Group I, dsDNA (Chapter 39)
Group II, ssDNA (Chapter 40)
Parvoviridae
*Bocavirus
*Human parvovirus B19
Group III, dsRNA (Chapter 41)
Group IV (
)ssRNA (Chapter 42)
1
Group V (
)ssRNA (Chapter 43)
Group VI, ssRNA-RT (Chapter 44)
Group VII, dsDNA-RT (Chapter 45)
Prions (Chapter 46)
2
Group II, the single-stranded DNA viruses, contains only one family of
viruses that are pathogenic in humans: Class Parvoviridae. Class Parvoviridae
contains environmentally resistant viruses that infect a wide range of animals.
Parvoviruses are the smallest viruses currently known.
Group II, ssDNA
Parvoviridae
*Bocavirus
*Human parvovirus B19
Parvovirus B19 is the agent that causes fifth disease, so named because the
diseases was the fifth type of common childhood exanthem among six rashes
listed in textbooks. Until the 1980s, the cause of this fifth listed exanthem
was unknown; so it came to be known as “fifth disease”. Other names for
fifth disease are erythema infectiosum and slapped face disease. Human
 
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