| australia | tasmania | murine leukemia virus | species | 0 | 1 |
| brazil | amazonas | murine leukemia virus | species | 0 | 1 |
| canada | alberta | murine leukemia virus | species | 0 | 1 |
| canada | quebec | murine leukemia virus | species | 0 | 1 |
| china | | murine leukemia virus | species | 1 | 0 |
| china | beijing | murine leukemia virus | species | 0 | 1 |
| china | heilongjiang | murine leukemia virus | species | 0 | 1 |
| china | shandong | murine leukemia virus | species | 1 | 0 |
| france | | murine leukemia virus | species | 7 | 0 |
| france | bretagne region | murine leukemia virus | species | 0 | 1 |
| france | ile-de-france region | murine leukemia virus | species | 0 | 1 |
| france | languedoc-roussillon region | murine leukemia virus | species | 0 | 1 |
| germany | | ecotropic murine leukemia virus | no rank | 1 | 0 |
| germany | | polytropic murine leukemia virus | no rank | 1 | 0 |
| iran | kerman province | murine leukemia virus | species | 0 | 1 |
| japan | | murine leukemia virus | species | 1 | 0 |
| south korea | jeju province | murine leukemia virus | species | 0 | 1 |
| sweden | uppsala | murine leukemia virus | species | 0 | 1 |
| thailand | | murine leukemia virus | species | 1 | 0 |
| thailand | | xenotropic murine leukemia virus | no rank | 1 | 0 |
| united kingdom | | murine leukemia virus | species | 9 | 0 |
| united kingdom | england | murine leukemia virus | species | 0 | 1 |
| united states | | friend mink cell focus-forming virus | no rank | 1 | 0 |
| united states | | friend murine leukemia virus | no rank | 3 | 0 |
| united states | | mlv-related virus cfs | no rank | 9 | 0 |
| united states | | murine leukemia virus | species | 11 | 0 |
| united states | | xenotropic murine leukemia virus | no rank | 2 | 0 |
| united states | california | amphotropic murine leukemia virus | no rank | 1 | 0 |
| united states | california | murine leukemia virus | species | 0 | 6 |
| united states | california | murine leukemia virus case#1 | no rank | 2 | 0 |
| united states | georgia | murine leukemia virus | species | 0 | 1 |
| united states | iowa | murine leukemia virus | species | 0 | 1 |
| united states | kansas | murine leukemia virus | species | 0 | 1 |
| united states | louisiana | murine leukemia virus | species | 0 | 1 |
| united states | maryland | murine leukemia virus | species | 0 | 1 |
| united states | massachusetts | murine leukemia virus | species | 0 | 1 |
| united states | nevada | murine leukemia virus | species | 0 | 1 |
| united states | new york | murine leukemia virus | species | 0 | 1 |
| united states | north carolina | murine leukemia virus | species | 0 | 1 |