Interstitial lung disease Interstitial lung disease Interstitial lung disease (ILD), or diffuse parenchymal lung disease (DPLD), is a group of lung diseases affecting the interstitium (the tissue and space around the air sacs of the lungs). It concerns alveolar epithelium, pulmonary capillary endothelium, basement membrane, perivascular and perilymphatic tissues. It may occur when an injury to the lungs triggers an abnormal healing response. Ordinarily, the body generates just the right amount of tissue to repair damage. But in interstitial lung disease, the repair process goes awry and the tissue around the air sacs (alveoli) becomes scarred and thickened. This makes it more difficult
Psittacine beak and feather disease in prevention. Every new bird that enters a pen with other birds should be quarantined first and be tested for BFDV. Birds which are known carriers should not be introduced into new pens, especially not if those contain young birds. Psittacine beak and feather disease Psittacine beak and feather disease (PBFD) is a viral disease affecting all Old World and New World parrots. The causative virus–"Beak and feather disease virus" (BFDV)—belongs to the taxonomic genus "Circovirus", family "Circoviridae". It attacks the feather follicles and the beak and claw matrices of the bird, causing progressive feather, claw and beak malformation and