Which of the following is the commonest cause of farmer's lung?
Farmer's lung is caused due to inhalation of mouldy hay or grain. Thermophillic actinomyeces, commonly Micropolyspora faeni is the common cause of farmer's lung. Ref: Park 21st edition, page 748. Chapter: Occupational health.
Micropolyspora faeni
Thermoactinomyces sacchari
Mycobacterium bovis
None of the above