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Table A12–2 Disease Scenarios for Influenza A and B Infection

 

No. of Cases

% of Cases

Committee HUI Values

Duration (years)

Moderate to severe respiratory illness

45,264,867

83.30%

 

bed rest

 

0.75

0.0082 (3 days)

discomfort following bed rest

 

0.90

0.0384 (14 days)

Respiratory illness with sinusitis

5,325,278

9.80%

 

bed rest

 

0.75

0.0082 (3 days)

sinusitis

 

0.75

0.0192 (7 days)

discomfort following bed rest

 

0.90

0.0192 (7 days)

Respiratory illness w/post-influenza fatigue

2,662,639

4.90%

 

bed rest

 

0.75

0.0082 (3 days)

discomfort following bed rest

 

0.90

0.0384 (14 days)

post-influenza fatigue

 

0.87

0.2466 (90 days)

Pneumonia

978,112

1.80%

 

acute care hospitalization

 

0.65

0.0274 (10 days)

recuperation

 

0.90

0.0384 (14 days)

Pneumonia—ICU

108,679

0.20%

 

ICU hospitalization

 

0.52

0.0274 (10 days)

recuperation

 

0.90

0.0384 (14 days)

Exacerbation of underlying asthma/heart disease

54,340

0.10%

0.53

0.0233 (8.5 days)

that everyone requiring bed rest for acute influenza infection incurs costs for an over-the-counter symptomatic treatment. The cost calculations include one visit to a physician and a prescription medication for 20% of the patients during the acute phase. Recovery phases were assumed to include costs for over-the-counter medications and physician visits for some of the patients with sinusitis and post-influenza fatigue. Hospitalization costs, diagnostics, inpatient and with outpatient physician visits, and medications were included costs for patients with pneumonia. There were no costs calculated for the exacerbation of underlying chronic disease states by influenza infection with pneumonia.



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