| argentina | | haplosporidium patagon | species | 1 | 0 |
| argentina | santa cruz province | haplosporidium patagon | species | 0 | 1 |
| australia | new south wales | haplosporidium sp. ex saccostrea glomerata | species | 8 | 0 |
| australia | western australia | haplosporidium nelsoni | species | 0 | 1 |
| canada | nova scotia | haplosporidium costale | species | 2 | 0 |
| france | aquitaine region | haplosporidium costale | species | 2 | 0 |
| france | pays de la loire region | haplosporidium costale | species | 2 | 0 |
| ireland | | haplosporidium nelsoni | species | 2 | 0 |
| ireland | | haplosporidium sp. mye-2005 | species | 1 | 0 |
| spain | galicia | minchinia sp. ex cerastoderma edule | species | 3 | 0 |
| spain | galicia | minchinia tapetis | species | 3 | 0 |
| united kingdom | england | minchinia chitonis | species | 51 | 0 |
| united states | delaware | haplosporidium nelsoni | species | 0 | 2 |
| united states | florida | minchinia mercenariae | species | 0 | 1 |
| united states | maine | haplosporidium nelsoni | species | 0 | 2 |
| united states | maryland | haplosporidium nelsoni | species | 0 | 1 |
| united states | massachusetts | minchinia mercenariae | species | 0 | 1 |
| united states | new hampshire | haplosporidium nelsoni | species | 0 | 1 |
| united states | new jersey | minchinia mercenariae | species | 0 | 1 |
| united states | north carolina | haplosporidium nelsoni | species | 0 | 1 |
| united states | rhode island | haplosporidium nelsoni | species | 0 | 1 |
| united states | virginia | haplosporidium costale | species | 1 | 0 |
| united states | virginia | haplosporidium louisiana | species | 4 | 0 |
| united states | virginia | haplosporidium nelsoni | species | 1 | 2 |
| united states | virginia | minchinia mercenariae | species | 1 | 1 |
| united states | virginia | minchinia teredinis | species | 3 | 0 |