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==Overview==
==Overview==
'''Influenza''', commonly known as '''flu''', is an [[infectious disease]] of birds and [[mammal]]s caused by  [[RNA virus]]es of the biological family [[Orthomyxoviridae]] (the influenza viruses). In humans, common symptoms of influenza infection are [[fever]], [[pharyngitis|sore throat]], [[myalgia|muscle pains]], severe [[headache]], [[cough]]ing, [[fatigue (medical)|weakness]] and [[malaise|general discomfort]].
'''Influenza''', commonly known as '''flu''', is an [[infectious disease]] of birds and [[mammal]]s caused by  [[RNA virus]]es of the biological family [[Orthomyxoviridae]] (the influenza viruses). In humans, common symptoms of influenza infection are [[fever]], [[pharyngitis|sore throat]], [[myalgia|muscle pains]], severe [[headache]], [[cough]]ing, [[fatigue (medical)|weakness]] and [[malaise|general discomfort]].
The available laboratory tests for influenza continue to improve. The United States [[Centers for Disease Control and Prevention]] (CDC) maintains an up-to-date summary of available laboratory tests.<ref>Centers for Disease Control and Prevention. [http://www.cdc.gov/flu/professionals/labdiagnosis.htm Lab Diagnosis of Influenza.]  Accessed on January 1, 2007</ref> According to the CDC, rapid diagnostic tests have a sensitivity of 70–75% and specificity of 90–95% when compared with viral culture. These tests may be especially useful during the influenza season (prevalence=25%) but in the absence of a local outbreak, or peri-influenza season (prevalence=10%<ref name="pimd12965940"/>).
The available laboratory tests for influenza continue to improve. The United States [[Centers for Disease Control and Prevention]] (CDC) maintains an up-to-date summary of available laboratory tests.<ref>Centers for Disease Control and Prevention. [http://www.cdc.gov/flu/professionals/labdiagnosis.htm Lab Diagnosis of Influenza.]  Accessed on January 1, 2007</ref> According to the CDC, rapid diagnostic tests have a sensitivity of 70–75% and specificity of 90–95% when compared with viral culture. These tests may be especially useful during the influenza season (prevalence=25%) but in the absence of a local outbreak, or peri-influenza season (prevalence=10%).


==References==
==References==

Revision as of 22:19, 9 January 2012

Influenza Microchapters

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Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Influenza from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Chest X Ray

Other Diagnostic Studies

Treatment

Medical Therapy

Primary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

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Risk calculators and risk factors for Influenza laboratory tests

For patient information click here

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Influenza, commonly known as flu, is an infectious disease of birds and mammals caused by RNA viruses of the biological family Orthomyxoviridae (the influenza viruses). In humans, common symptoms of influenza infection are fever, sore throat, muscle pains, severe headache, coughing, weakness and general discomfort. The available laboratory tests for influenza continue to improve. The United States Centers for Disease Control and Prevention (CDC) maintains an up-to-date summary of available laboratory tests.[1] According to the CDC, rapid diagnostic tests have a sensitivity of 70–75% and specificity of 90–95% when compared with viral culture. These tests may be especially useful during the influenza season (prevalence=25%) but in the absence of a local outbreak, or peri-influenza season (prevalence=10%).

References

  1. Centers for Disease Control and Prevention. Lab Diagnosis of Influenza. Accessed on January 1, 2007

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