It is spread through eggs and contact with infected litter, feed or water. It is also transmitted by people, vehicles etc.

How do you treat chickens with CRD?

Lincomycin combined with Spectinomycin is the most commonly used product for treating a flock with CRD at the chicken vet ; as there is no withholding period for eggs ! Chlortetracycline another product registered for egg layers .

What is human CRD?

Chronic Respiratory Diseases (CRDs) are chronic diseases of the airways and other structures of the lung. Some of the most common are asthma, chronic obstructive pulmonary disease (COPD), respiratory allergies, occupational lung diseases and pulmonary hypertension.