| argentina | buenos aires city | fusobacterium nucleatum | species | 0 | 1 |
| argentina | buenos aires province | fusobacterium nucleatum | species | 0 | 1 |
| austria | vienna | fusobacterium nucleatum | species | 1 | 0 |
| botswana | southern district | fusobacterium nucleatum | species | 0 | 1 |
| brazil | mato grosso | fusobacterium nucleatum | species | 0 | 1 |
| brazil | rio de janeiro | fusobacterium nucleatum | species | 0 | 3 |
| brazil | sao paulo | fusobacterium nucleatum | species | 0 | 2 |
| chile | | fusobacterium nucleatum | species | 66 | 0 |
| chile | santiago metropolitan region | fusobacterium nucleatum | species | 0 | 1 |
| china | | fusobacterium nucleatum | species | 4 | 0 |
| china | | fusobacterium nucleatum subsp. animalis | subspecies | 1 | 0 |
| china | | fusobacterium nucleatum subsp. polymorphum | subspecies | 1 | 0 |
| china | guangdong | fusobacterium nucleatum subsp. polymorphum | subspecies | 24 | 0 |
| china | guangdong | fusobacterium nucleatum subsp. vincentii | subspecies | 34 | 0 |
| china | shanghai shi | fusobacterium nucleatum subsp. animalis | subspecies | 3 | 0 |
| china | shanghai shi | fusobacterium nucleatum subsp. polymorphum | subspecies | 3 | 0 |
| china | shanghai shi | fusobacterium nucleatum subsp. vincentii | subspecies | 1 | 0 |
| comoros | | fusobacterium nucleatum subsp. polymorphum atcc 10953 | no rank | 1 | 0 |
| dominican republic | distrito nacional | fusobacterium nucleatum | species | 0 | 1 |
| dominican republic | santo domingo province | fusobacterium nucleatum | species | 0 | 1 |
| germany | | fusobacterium nucleatum | species | 1 | 0 |
| guatemala | guatemala department | fusobacterium nucleatum | species | 0 | 1 |
| hong kong | | fusobacterium nucleatum | species | 0 | 1 |
| india | | fusobacterium nucleatum | species | 4 | 0 |
| india | | fusobacterium nucleatum subsp. polymorphum | subspecies | 2 | 0 |
| iran | | fusobacterium nucleatum | species | 6 | 0 |
| kuwait | | fusobacterium nucleatum | species | 0 | 1 |
| micronesia | | fusobacterium nucleatum | species | 0 | 1 |
| netherlands | | fusobacterium nucleatum subsp. animalis | subspecies | 2 | 0 |
| netherlands | south holland province | fusobacterium nucleatum | species | 21 | 0 |
| nigeria | sokoto | fusobacterium nucleatum | species | 0 | 1 |
| northern mariana islands | | fusobacterium nucleatum | species | 0 | 1 |
| norway | more og romsdal county | fusobacterium nucleatum | species | 0 | 1 |
| south korea | | fusobacterium nucleatum | species | 4 | 0 |
| south korea | | fusobacterium nucleatum subsp. animalis | subspecies | 44 | 0 |
| south korea | | fusobacterium nucleatum subsp. nucleatum | subspecies | 15 | 0 |
| south korea | | fusobacterium nucleatum subsp. polymorphum | subspecies | 15 | 0 |
| south korea | | fusobacterium nucleatum subsp. vincentii | subspecies | 9 | 0 |
| south korea | gwangju city | fusobacterium nucleatum subsp. animalis | subspecies | 14 | 0 |
| south korea | gwangju city | fusobacterium nucleatum subsp. nucleatum | subspecies | 10 | 0 |
| south korea | gwangju city | fusobacterium nucleatum subsp. nucleatum chdc f316 | no rank | 2 | 0 |
| south korea | gwangju city | fusobacterium nucleatum subsp. polymorphum | subspecies | 441 | 0 |
| south korea | gwangju city | fusobacterium nucleatum subsp. vincentii | subspecies | 10 | 0 |
| south korea | gwangju city | fusobacterium nucleatum subsp. vincentii chdc f8 | no rank | 1 | 0 |
| spain | | fusobacterium nucleatum subsp. animalis | subspecies | 528 | 0 |
| sweden | | fusobacterium nucleatum | species | 1 | 0 |
| switzerland | | fusobacterium nucleatum | species | 1 | 0 |
| switzerland | | fusobacterium nucleatum subsp. polymorphum | subspecies | 1 | 0 |
| taiwan | | fusobacterium nucleatum | species | 0 | 3 |
| united kingdom | | fusobacterium nucleatum subsp. polymorphum atcc 10953 | no rank | 1 | 0 |
| united kingdom | | fusobacterium nucleatum w1481 | no rank | 374 | 0 |
| united kingdom | england | fusobacterium nucleatum | species | 0 | 1 |
| united states | | fusobacterium nucleatum | species | 471 | 0 |
| united states | | fusobacterium nucleatum subsp. polymorphum | subspecies | 4 | 0 |
| united states | | fusobacterium nucleatum subsp. polymorphum atcc 10953 | no rank | 1 | 0 |
| united states | arkansas | fusobacterium nucleatum | species | 112 | 0 |
| united states | illinois | fusobacterium nucleatum | species | 49 | 0 |
| united states | massachusetts | fusobacterium nucleatum | species | 0 | 1 |
| united states | minnesota | fusobacterium nucleatum | species | 0 | 1 |
| united states | new york | fusobacterium nucleatum | species | 0 | 1 |
| united states | oregon | fusobacterium nucleatum | species | 0 | 1 |
| united states | pennsylvania | fusobacterium nucleatum | species | 1 | 0 |
| united states | washington | fusobacterium nucleatum | species | 122 | 0 |