Which of the following is an occupational respiratory disorder?
Occupational lung diseases are those diseases that are caused by the inhalation of dust, chemicals, or proteins. It includes diseases like occupational asthma, chronic obstructive pulmonary disease (COPD), interstitial lung diseases, silicosis.
a) Botulism is caused by the botulinum toxin.
b) Anthracis is caused by the bacterium Bacillus anthracis. They are commonly found in the soil of grazing areas.
c) Emphysema is caused due to the destruction of alveoli of the lungs.
d) Silicosis is an occupational lung disease that is caused due to inhaling particles of silica. It is an interstitial lung disease. It results in the formation of masses of fibrous tissue and nodules of dense fibrosis.
Thus, the correct answer is option D.