Table 1.

Overview over analysed material from animals in herds with acute outbreak of respiratory disease

Sample category	No. of herds sampled	No. of animals analysed	Method of detection
Paired serum	20	94	ELISA
Single serum	1	10	ELISA
Nasal swabs*	21	86	RTqPCR
BAL*	9	37	RTqPCR
TA*	7	19	RTqPCR

The ELISA detected antibodies against BRSV, BCoV and BPIV3, and the RTqPCR detected RNA of BRSV.

BAL broncheoalveolar lavage, TA tracheal aspirate. Nasal swabs* and TA* or BAL* from herds that were negative based on serology were not analysed.