− | Clinical signs include an acute onset fever, anorexia, depression, lowered milk yield, hyperpnoea, coughing and a mucopurulent nasal discharge, which all occur suddenly. Dyspnoea occurs with abducted elbows and extended necks and an expiratory grunt. The disease can be fatal within 1-3 week. | + | Clinical signs include an acute onset fever, anorexia, depression, lowered milk yield, hyperpnoea, coughing and a mucopurulent nasal discharge, which all occur suddenly. Dyspnoea occurs with abducted elbows and extended necks and an expiratory grunt. The disease can be fatal within 1-3 weeks. |