OTHER COMMON VIRAL RESPIRATORY INFECTIONS

OTHER COMMON VIRAL RESPIRATORY INFECTIONS is a topic covered in the Harrison's Manual of Medicine.

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Acute viral respiratory illnesses account for ≥50% of all acute illnesses; adults have 3–4 cases per person per year. The clinical presentations of viral infections generally are not specific enough to allow an etiologic diagnosis, and viral illnesses are typically grouped into clinical syndromes (e.g., the “common cold,” pharyngitis, tracheitis, pneumonia). This section will cover the six major groups of respiratory viruses; see Table 101-2 for an overview and Chap. 58 for additional details on viral respiratory infections.

TABLE 101-2: ILLNESSES ASSOCIATED WITH RESPIRATORY VIRUSES
 Frequency of Respiratory Syndromes
VirusMost FrequentOccasionalInfrequent
RhinovirusesCommon coldExacerbation of chronic bronchitis and asthmaPneumonia in children
Coronavirusesa,bCommon coldExacerbation of chronic bronchitis and asthmaPneumonia and bronchiolitis
Human respiratory syncytial virusPneumonia and bronchiolitis in young childrenCommon cold in adultsPneumonia in elderly and immunosuppressed pts
Parainfluenza virusesCroup and lower respiratory tract disease in young childrenPharyngitis and common coldTracheobronchitis in adults; lower respiratory tract disease in immunosuppressed pts
AdenovirusesCommon cold and pharyngitis in childrenOutbreaks of acute respiratory disease in military recruitscPneumonia in children; lower respiratory tract and disseminated disease in immunosuppressed pts
Influenza A virusesInfluenzadPneumonia and excess mortality in high-risk ptsPneumonia in healthy individuals
Influenza B virusesInfluenzadRhinitis or pharyngitis alonePneumonia
EnterovirusesAcute undifferentiated febrile illnesseseRhinitis or pharyngitis alonePneumonia
Herpes simplex virusesGingivostomatitis in children; pharyngotonsillitis in adultsTracheitis and pneumonia in immunocompromised ptsDisseminated infection in immunocompromised pts
Human metapneumovirusesUpper and lower respiratory tract disease in childrenUpper respiratory tract illness in adultsPneumonia in elderly and immunosuppressed pts
aSevere acute respiratory syndrome–associated coronavirus (SARS-CoV) caused epidemics of pneumonia from November 2002 to July 2003 (see text).
bMiddle East respiratory syndrome coronavirus (MERS-CoV) has caused severe respiratory illnesses from 2012 to the time of this writing (2015); see text.
cSerotypes 4 and 7 most commonly; also serotypes 14 and 21.
dFever, cough, myalgia, malaise.
eMay or may not have a respiratory component.

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TY - ELEC T1 - OTHER COMMON VIRAL RESPIRATORY INFECTIONS ID - 623266 Y1 - 2017 PB - Harrison's Manual of Medicine UR - https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623266/all/OTHER_COMMON_VIRAL_RESPIRATORY_INFECTIONS ER -