Note; If over exposure to the major mite allergen (Der p1) causes significant damage to vulnerable tissue, the breach or 'gap' in lung defences may invite harmful bacteria or moulds to take advantage and slip past defences. Doctors believe that this may be the reason why people with asthma develop more lung infections than healthy people.
'House Dust Mite Der p 1 Downgrades Defenses of the Lung by Inactivating Elastase Inhibitors', Brown A, et al, 'Am.J.Respir.Cell Mol. Biol'. 2003 Vol 29;pages 381 to 389
'Elafin (elastase-specific inhibitor) has anti-microbial activity against Gram-positive and Gram-negative respiratory pathogens', Simpson AJ, Maxwell AI, Govan JRW, Haslett C, Sallenave JM,; 'FEBS Letters', 452 (1999) 309-313 support this research