Respiratory infection caused asthma

Respiratory infections, especially HIV infection in children induced asthma is a major factor. According to the asthma clinic statistics, about 70% of children with respiratory tract infection was due to an asthma attack and excited, flu patients accounted for 45%. bronchitis patients accounted for 20%. Respiratory tract infection caused an asthma attack because : 1. Viruses or bacteria or become an invasive respiratory inhalant allergens, which can cause rapid-onset allergy. 2, infection of the respiratory mucosa is a non-specific stimulation, Infection after the airway secretions stimulate the state-bronchial mucosa caused bronchial smooth muscle spasticity resulting from asthma. 3, respiratory cells infected after the release of neuraminidase, the tablets can change the cell surface antigen caused her allergic reaction. 4, respiratory infections causing respiratory epithelial injury, exfoliated epithelial airway lost so protective barrier function; respiratory infection also enable microvascular of inflammatory mediators and neuropeptide the sensitivity increased, resulting in plasma extravasation, the trachea blocked. breathing intensified. Respiratory infection not only stimulate asthma, but asthma can lead to permanent status, therefore, Asthma-abuse prevention of infection is very important.