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VIRUSES (Paramyxoviruses (Respiratory Syncitial virus -
characteristic…
VIRUSES
Paramyxoviruses
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Respiratory Syncitial virus -
characteristic multinucleated giant cells;
no haemagglutin, no neuramidase;
one serotype, no re-infectn
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Parainfluenza virus (type 1-4), CPE
symptoms overlap: febrile common cold, broncholitis, bronchopneumonia, croup #
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Adenoviruses - DNA virus, lymph tissue around pharynx
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haemorrhagic cystitis, enteritis
Flavoviruses
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Dengue (type 1-4)
Aedes aegypti/albopictus
Dengue fever
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abrupt onset, continuous, high fever (2-7d)
deep-seated, muscle, back & joint pain
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Dengue Shock Syndrome (DSS) - d3-d7, post-fever fall
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Coronaviruses - crown-like projectns on virion, RBC haemagglugtinatn
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Picornaviruses - small, naked, have RNA
Enteroviruses
Poliovirus (3 serotypes)
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abortive infectn
minor influenza-like, aseptic meningitis
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Enterovirus A-D
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Coxsackieviruses
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B
R iliac pain, misdiagnosed appendicitis
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Rhinoviruses - >100 serotypes, genetic/Ag variatn
rhinorrhea, sneezing sore throat, cough, headache
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Orthomyxoviruses
Influenza - lipoprotein envelope w H&N, CPE
general
myalgia, malaise, headache
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RE desquamatn, ciliary damage (viral multiplicatn)
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