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Volume 10, Number 8—August 2004

Long-Term Prognosis for Clinical West Nile Virus Infection

Anne Labowitz Klee*, Beth Maldin*, Barbara Edwin*, Iqbal Poshni*, Farzad Mostashari*, Annie D. Fine*, Marcelle Layton*, and Denis Nash*†1Comments to Author 
Author affiliations: *New York City Department of Health, New York City, New York, USA; †Centers for Disease Control and Prevention, Atlanta, Georgia, USA; 1Current affiliation: New York Academy of Medicine, New York, New York, USA

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Table 1

Health outcomes assessed during follow-up telephone interviews of New Yorkers with clinical West Nile virus infection in 1999a,b

Physical health Cognitive health Functional health
Difficulty walkingc
Joint pain
Muscle pain
Muscle weakness
Stiff neck Confusion
Loss of concentration
Loss of memory Heavy chores
Light housekeeping
Managing medications
Managing money
Meal preparation

aAt 12 months postonset, baseline status for each outcome was assessed; for each outcome, patients were asked to report the degree to which they experienced the signs and symptoms at baseline (by recall) and at 12 months postonset.
bEach outcome was scored 0–2 according to the following scale: always = 2, sometimes = 1, never = 0. Functional health was scored according to how frequently the patient had difficulty performing the task. Recovery was calculated as the sum of the baseline score in each category, divided by the sum of the 12-month score.
cDifficulty walking was given twice the weight as other outcomes in the recovery score calculation.

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Page updated: March 01, 2011
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