BALF samples were cultured for aerobic bacteria on blood agar and Casmin (NAD-enriched) plates to indicate the presence of concurrent bacterial pneumonia. PCR assays for porcine circovirus 2 (PCV2) were conducted for swine BALF samples [31 (link)]. To exclude other causes of pneumonia in pigs, commercial assays for Mycoplasma hyopneumoniae and PRRSV were conducted according to the manufacturer’s recommendations (VetMax, Life Technologies, Carlsbad, CA, USA).
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