Byssinosis not brown. Brown lung can ultimately result in narrowing of the airways, lung scarring and death from infection or respiratory failure. Patient history should reveal exposure to cotton, flax, hemp, or jute dust. Diagnostic tests include a lung function test and a chest x ray or CT scan. Measurable change in lung function before and after working shifts is key to diagnosis. Patients suffering from byssinosis show a significant drop in FEV1 over the course of work shift. Chest radiographs show areas of opacity due to fibrosis of the pulmonary parenchyma. Affected workers should be offered alternative employment. Continued exposure
Citrus leprosis disease Citrus leprosis disease Citrus leprosis (CL) is an economically important viral disease affecting citrus crops. This emerging disease is widely distributed in South and Central America, from Argentina to Mexico. The disease is associated with up to three different non-systemic viruses, which cause similar symptoms in the citrus hosts and are transmitted by the same vector, mites of the genus "Brevipalpus"; although they have vastly different genomes. Citrus leprosis virus" nuclear type (CiLV-N) is found in the nuclei and cytoplasm of infected cells, while Citrus leprosis virus" cytoplasmic type (CiLV-C) is found in the endoplasmic reticulum. In 2012, a new