Table 1. Total sample sizes of M. ovipneumoniae for each host species and sampling location. ‘SDSU (Captive)’ = captive bighorn sheep that was infected at South Dakota State University with a Nevada-origin bighorn sheep strain. Unk. = unknown.
| Host species | Country or US state | Site | N |
| Domestic sheep | Australia | Queensland | 2 |
| Bosnia and Herzegovina | Hercegovacko-neretvanski | 1 | |
| Brazil | Rio de Janeiro | 1 | |
| China | Hohhot | 1 | |
| France | Unk. | 3 | |
| Vaucluse | 1 | ||
| USA: Idaho | Farm 1 | 14 | |
| Farm 2 | 11 | ||
| Farm 3 | 13 | ||
| USA: Nebraska | Farm 4 | 3 | |
| Bighorn sheep | |||
| USA: Arizona | Bighorns | 1 | |
| Vermillions | 2 | ||
| USA: Idaho | Lost River | 3 | |
| South Beaverhead | 1 | ||
| USA: Montana | Elkhorn Mountains | 1 | |
| USA: Nebraska | Barrell Butte | 2 | |
| Fort Robinson | 2 | ||
| Hubbard’s Gap | 2 | ||
| USA: New Mexico | Taos Pueblo | 6 | |
| USA: Nevada | SDSU (Captive) | 1 | |
| USA: Oregon | Lostine | 2 | |
| USA: South Dakota | Rapid Creek | 1 | |
| USA: Utah | Antelope Island | 2 | |
| USA: Washington | Black Butte, Hells Canyon | 1 | |
| USA: Wyoming | Whiskey Mountain | 2 | |
| Caribou | USA: Alaska | Nelchina | 3 |
| Domestic goat | China | Gansu | 1 |
| Sichuan | 8 | ||
| France | Unk. | 3 | |
| Bosnia and Herzegovina | Hercegovacko-neretvanski | 1 | |
| USA: Alaska | Farm 5 | 1 | |
| USA: Idaho | Farm 6 | 1 | |
| USA: Washington | Farm 7 | 1 | |
| Farm 8 | 1 | ||
| Total | 99 |