Volume 14, Number 11—November 2008
Novel Human Rhinoviruses and Exacerbation of Asthma in Children1
|Current persistent asthma:|
|In children 2–5 y of age||All of the following: 1. Physician diagnosis of asthma 2. >2 previous episodes of cough, wheeze, and/or respiratory distress 3. Current treatment with asthma medications 4. Parent or sibling with current or past diagnosis of asthma or allergy, and/or current or past evidence of atopy (defined by seasonal rhinitis, eczema, or food hypersensitivity)|
|In children 6–17 y of age
||All of the following:
1. Physician diagnosis of asthma
2. Symptoms of asthma in the past 12 mo
3. Current treatment with asthma medications
|Case (asthma exacerbation)
||Current persistent asthma, hospital admission or clinic visit for asthma exacerbation, and all of the following:
1. Signs and symptoms of airflow obstruction (i.e., cough, wheeze, shortness of breath, chest
tightness) within past 48 h
2. Increased asthma symptoms resulting in hospital admission or clinic visit
3. Repeated use of short-acting β-agonists within past 48 h
4. Increased dose or addition of a new asthma controller therapy within past wk
|Control (well-controlled asthma)
||Current persistent asthma, routine clinic visit for asthma, and all of the following:
1. No systemic steroid therapy in past 4 wk
2. No increase in dose and no new controller medications in past wk
3. No change in the frequency of use of short-acting rescue medications in past wk
4. No increase in asthma symptom frequency in past wk
|Acute respiratory viral illness||>2 of the following: fever, stuffy/runny nose, headache, muscle aches, and pain or redness of eye(s) at the time of clinic visit or hospital admission|
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1Part of the information in this article was presented at the International Conference of the American Thoracic Society, May 16–21, 2008, Toronto, Ontario, Canada.
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