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Atopy does not predispose to RSV bronchiolitis or postbronchiolitic wheezing.
British Medical Journal (Clinical Research Ed.)
|June 27, 1981
Summary
Respiratory syncytial virus (RSV) bronchiolitis in infancy did not show links to immunodeficiency or atopy. However, persistent wheezing post-RSV bronchiolitis was associated with higher eosinophil counts and IgE levels.
Area of Science:
- Pediatric Respiratory Medicine
- Immunology
- Allergy
Background:
- Respiratory syncytial virus (RSV) bronchiolitis is a common infant illness.
- Wheezing can persist after RSV bronchiolitis, raising questions about underlying causes.
Purpose of the Study:
- To investigate the roles of immunodeficiency and atopy in the development of RSV bronchiolitis.
- To explore factors contributing to post-bronchiolitic wheezing.
Main Methods:
- Comparison of skin and blood test results between children with a history of RSV bronchiolitis and controls.
- Assessment of atopy, common antigen sensitivity, eosinophil counts, and immunoglobulin levels.
Main Results:
- No significant differences in atopy, common antigen sensitivity, or immunoglobulin levels were found between RSV bronchiolitis patients and controls.
- Children with persistent wheezing after RSV bronchiolitis had slightly higher eosinophil counts and IgE antibodies to Dermatophagoides.
- Exercise-induced bronchial lability was higher in RSV patients but did not correlate with eosinophil or IgE levels.
Conclusions:
- Immunodeficiency and atopy do not appear to be primary predisposing factors for RSV bronchiolitis or subsequent wheezing.
- Genetic factors for RSV bronchiolitis may differ from those for atopic asthma.
- Exclusive breastfeeding might offer protection against both RSV bronchiolitis and atopic asthma.