| canada | quebec | porcine respiratory coronavirus | no rank | 0 | 3 |
| china | | porcine respiratory coronavirus | no rank | 3 | 0 |
| china | shanghai shi | prcv isu-1 | no rank | 0 | 1 |
| denmark | | porcine respiratory coronavirus | no rank | 1 | 0 |
| hungary | | porcine respiratory coronavirus | no rank | 1 | 0 |
| japan | | porcine respiratory coronavirus | no rank | 1 | 0 |
| japan | tochigi prefecture | porcine respiratory coronavirus | no rank | 4 | 1 |
| spain | castile and leon | porcine respiratory coronavirus | no rank | 0 | 1 |
| spain | murcia | porcine respiratory coronavirus | no rank | 0 | 1 |
| taiwan | | porcine respiratory coronavirus | no rank | 0 | 1 |
| united kingdom | england | porcine respiratory coronavirus | no rank | 0 | 1 |
| united states | | porcine respiratory coronavirus | no rank | 1 | 0 |
| united states | | prcv isu-1 | no rank | 1 | 0 |
| united states | indiana | porcine respiratory coronavirus | no rank | 0 | 2 |
| united states | indiana | prcv isu-1 | no rank | 1 | 0 |
| united states | michigan | porcine respiratory coronavirus | no rank | 0 | 1 |
| united states | ohio | porcine respiratory coronavirus | no rank | 77 | 1 |