| china | hunan | uncultured cardiobacterium sp. | species | 2 | 0 |
| japan | | cardiobacterium sp. auto5 | species | 1 | 0 |
| japan | | cardiobacterium valvarum | species | 1 | 0 |
| malaysia | | cardiobacterium hominis | species | 1 | 0 |
| niger | | uncultured cardiobacterium sp. | species | 1 | 0 |
| singapore | | cardiobacterium valvarum | species | 0 | 1 |
| south korea | | cardiobacterium valvarum | species | 1 | 0 |
| spain | | uncultured cardiobacterium sp. | species | 1 | 0 |
| switzerland | | cardiobacterium hominis | species | 2 | 0 |
| taiwan | | cardiobacterium | genus | 0 | 1 |
| taiwan | | cardiobacterium hominis | species | 0 | 1 |
| united kingdom | | cardiobacterium sp. feline oral taxon 092 | species | 1 | 0 |
| united kingdom | | cardiobacterium sp. feline oral taxon 346 | species | 1 | 0 |
| united states | | cardiobacterium hominis | species | 8 | 0 |
| united states | | uncultured cardiobacterium sp. | species | 1 | 0 |
| united states | washington | cardiobacterium hominis | species | 1048 | 0 |