2.8 Study level information
The country where study was conducted, year of sample collection, type of study (clinical trial and observational studies including case-control study, cross-sectional study, case reports, ecologic study, pig age group(s), clinical signs, type of animal sample collected (feces, oropharyngeal, oral fluids, serum), type of environmental sample collected (pen, feeder, pit, hallway, load out chutes, etc.), number of samples tested, percentage of samples testing positive, type of diagnostic tools reported (PCR, in situ assays, and serology) and gross & histologic lesions reports were collected.