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Influenza

 


BASICS

DESCRIPTION

  • Acute, typically self-limited, febrile infection caused by orthomyxovirus influenza types A and B

  • Marked by inflammation of nasal mucosa, pharynx, conjunctiva, and respiratory tract

  • Ou...

DIAGNOSIS

Look for: 
  • Systemic symptoms

  • Cough

  • Not being able to cope with daily activities

  • Being confined to bed

HISTORY

Sudden onset of: 
  • Fever (37.7–40.0°C), especially within 3 days of illness onset

  • Anorexi...

TREATMENT

  • Symptomatic treatment is typically all that is required (saline nasal spray, analgesic gargle, antipyretics, analgesics).

  • Cool-mist or ultrasonic humidifier to increase moisture of inspired a...

ONGOING CARE

FOLLOW UP RECOMMENDATIONS

  • Mild cases: Usually, no follow-up is required.

  • Moderate or severe cases: Follow up until symptoms and any secondary sequelae resolve.

DIET

Increase fluid intake. 

PATIENT EDUCATION

ADDITIONAL READING

  • Centers for Disease Control and Prevention. Influenza (flu). http://www.cdc.gov/flu/index.htm. Accessed July 29, 2017.

  • Grohskopf LA, Sokolow LZ, Broder KR, et al. Prevention and cont...

CODES

ICD10

  • J11.1 Influenza due to unidentified influenza virus with other respiratory manifestations

  • J10.1 Flu due to oth ident influenza virus w oth resp manifest

  • J11.00 Flu due to unidentified flu vir...

CLINICAL PEARLS

  • Influenza is an acute, (typically) self-limited, febrile infection caused by influenza virus types A and B.

  • With rare exceptions, all persons >6 months should be vaccinated against i...

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