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38 Cards in this Set
- Front
- Back
What are some characteristics of adenovirus?
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ds DNA; non-enveloped icosahedral
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What is the most common viral cause of pharyngitis?
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adenovirus
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What is the purpose of the fiber on the adenovirus?
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hemagglutinating activity; attachment to receptor
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What is the receptor in adenovirus?
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CAR; member if Ig superfamily
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How is adenovirus transmitted?
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aerosol, close contact, fecal-oral, direct or indirect to mucosa, fomites
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Where does adenovirus attack in humans?
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mucoepithelial cells in respiratory tract, GI tract, conjunctiva or cornea
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What does the subgenus of adenovirus tell you/
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functional components....F is most oncogenic
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What are the serotypes for acute respiratory disease of recruits?
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4,7,21
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How is a adenovirus detected?
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detection of antigen, virus isolation, serology
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What is CEP
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complement fixation test; clear area on slide will tell area of lysis
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Is there a vaccine for adenovirus?
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only for the acute respiratory distress syndrome serotypes
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What are some characteristics of coxsackie virus?
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cytolytic, enterovirus, naked, + stranded RNA, icosahedral capsid
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What is herpangina? and what causes it?
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vascular lesions in the throat caused by coxsackie virus
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s/s of herpangina
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sudden fever, sore throat, headache, dysphagia, malaise, white papules on posterior of palate
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characteristics of EBV
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only infects certain epithelial cells and B lymphocytes with receptor for C3d
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Where is EBV permissive and lytic?
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epithelial cells
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Where is EBV episomal and latent?
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B lymphocytes
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What does EBV cause?
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infectious mononucleosis and pharyngitis
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s/s mono
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fever, lymphadenopathy, sore throat with tonsillar exudates
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What is the most common cause of the common cold?
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rhinovirus
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clinical characteristics of common cold
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acute, afebrile
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When does rhinovirus cause the cold?
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summer/fall
30-50% |
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When does coronavirus cause the cold?
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winter/spring
10-30% |
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characteristics of the rhinovirus?
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nonenveloped icosahedral capsid; ss +sense RNA, replication in cytoplasm using RNA-dependent RNA polymerase
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What is resistant to drying and detergents?
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rhinovirus
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What is the receptor for rhinovirus?
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ICAM-1
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how is rhinovirus transmitted?
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fecal-oral, direct contact, aerosols, fomites
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incubation for rhiniovirus?
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1-2 days with 7 day illness duration
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characteristics of coronavirus
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+ sense ssRNA, enveloped
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Where does coronavirus infect?
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ciliated epithelium of URT, leading to cell damage and inflammation
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How is coronavirus trasmitted?
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airborne droplets to the nasal mucosa
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What are most cases of acute rhinosinusitis caused by?
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rhinovirus and adenovirus
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What are the bacterial pathogens for acute rhinosinusitis?
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S. pneumoniae and H. influenza
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What does parainfluenza cause?
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common cold
bronchitis croup |
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s/s laryngitis
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hoarseness, weak voice, tickling sensation and rawness of throat, sore throat, dry throat and cough
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Who usually has croup?
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children <4 with laryngitis
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s/s of croup
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barking cough, swelling around vocal cords
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differential for croup
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diphtheria, epiglottitis
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