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Flashcards in Viruses and Prions Deck (161)
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151

How is Influenza virus types A, B, C transmitted?

respiratory droplets

152

What lab findings are useful to help diagnose Epstein-Barr virus? (3)

blood smear shows absolute lymphocytosis and atypical lymphocytes; monospot test shows heterophile Abs for first 2 weeks of infection; rising IgG (previous infection) and IgM (acute infection) titres useful to follow course of disease

153

What is the morphology of human immunodefiency virus?

rNA retrovirus

154

What is the morphology of measles virus (rubeola)?

rNA enveloped paramyxoviridae

155

What are the three 'Cs' of measles?

cough, coryza, conjunctivitis

156

What is the morphology of polio virus?

non enveloped RNA picoRNAvirus, an enterovirus

157

Describe the ulcers associated with HSV-2.

genital herpes with painful penile, vulvar or cervical ulcers

158

What are the clinical manifestations of prions?

15-20 months incubation, then slow, progressive dementia and other neurological symptoms (compare Alzhemers). Creutzfeld-Jacob disease?

159

Prions: Jeopardy style: pathologic prions take on this conformation

what is beta-pleated sheet

160

What is the morphology of respiratory syncytial virus?

enveloped RNA virus

161

What regions are associated with alpha and flavi viruses? (2+3)

yellow fever in tropical Africa and South America. Dengue fever in Middle East, Africa and Caribbean