Respiratory viruses and exacerbations of asthma in adults.

To study the role of respiratory viruses in exacerbations of asthma in adults.Longitudinal study of 138 adults with asthma.Leicestershire Health Authority.48 men and 90 women 19-46 years of age with a mean duration of wheeze of 19.6 years. 75% received regular treatment with bronchodilators; 89% gave a history of eczema, hay fever, allergic rhinitis, nasal polyps, or allergies; 38% had been admitted to hospital with asthma.Symptomatic colds and...