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15 Cards in this Set
- Front
- Back
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What are Poxviridae?
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They are the most complex of all known viruses. It has a large complex DNA genome coding for hundreds of proteins. It is surrounded by two envelopes, and carries many of its own enzymes.
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Do Poxviridae cause chickenpox?
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NO. It is caused by herpesvirus.
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Was a successful smallpox vaccine developed?
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Yes. It contained a vaccinia virus, an avirulent form of poxviridae.
Smallpox only infected humans. There are no animal reservoirs. All poxviridae infections produced clinically overt smallpox. |
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What is Molluscum Contagiosum?
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A pox virus causes these small 1-2 mm in diameter white bumps that have a central dimple. They are seen on AIDS patients as well.
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What are the 3 members of the Papovaviridae?
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1. Papilloma virus-causes human warts and cervical cancer.
2. Polyomavirus virus- has 2 members; human BK and JC virus. 3. Simian vacuolating virus- does not infect humans. |
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There are many strains of papilloma viruses. TRUE/FALSE
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TRUE. They have a tropism for squamous epithelial cells. Papilloma virus causes warts, common, genital and laryngeal.
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cervical dysplasia and carcinoma are associated with sexual activity and previous exposure to certain starins(type 16/18) of human papilloma virus. TRUE/FALSE
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TRUE. The Pap test is routinely used in early detection of cervical dysplastic changes.
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The Polyoma viruses infect humans. TRUE/FALSE
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TRUE. They were named after the initials of the patient from which the virus was discovered.
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The BK virus causes mild or asymptomatic infection in children. TRUE/FALSE
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TRUE.
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What is the JC Polyomavirus?
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IT is similar to BK but causes as well an opportunistic infection in immunocompromised patients called" progressivemultifocal leukoencephlopathy(PML).
patients develop CNS white matter damage. |
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What are the Adenoviridae?
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They cause upper respiratory tract infections in children. It is estimated that > 10% of childhood respiratory infections are caused by starins of adenoviridae, and nearly all adults have serologic evidence of prior exposure.
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What are its symptoms?
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Rhinitis, conjunctivitis, sore throat and cough. In children lower respiratory pneumonia can result as a sequelae.
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List 4 respiratory illnesses in children in order of frequency.
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1. RSV
2. Parainfluenza 3. Rhinovirus 4. Adenovirus. |
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What is parvoviridae?
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It is the smallest icosahedral virus and has a single strand of DNA.
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What does parvovirus cause?
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It causes a chilhood disease called "erythema infectiosum"(fifth disease) characterized by fever and a slapped face rash on the cheeks.
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