| infectious bronchitis virus | no rank | viruses and viroids | viruses | no rank | 11120 |
| porcine respiratory coronavirus | no rank | viruses and viroids | viruses | no rank | 11146 |
| severe acute respiratory syndrome coronavirus 2 | no rank | | | no rank | 2697049 |
| severe acute respiratory syndrome-related coronavirus | species | viruses and viroids | viruses | species | 694009 |
| transmissible gastroenteritis virus | no rank | viruses and viroids | viruses | no rank | 11149 |