| argentina | entre rios province | trichostrongylus colubriformis | species | 0 | 1 |
| australia | new south wales | trichostrongylus colubriformis | species | 0 | 6 |
| australia | queensland | trichostrongylus colubriformis | species | 0 | 4 |
| australia | victoria | trichostrongylus colubriformis | species | 0 | 1 |
| australia | western australia | trichostrongylus colubriformis | species | 0 | 1 |
| austria | | trichostrongylus colubriformis | species | 3 | 0 |
| brazil | minas gerais | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | paraiba | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | pernambuco | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | rio grande do norte | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | sao paulo | trichostrongylus colubriformis | species | 0 | 1 |
| cameroon | | trichostrongylus colubriformis | species | 4 | 0 |
| canada | ontario | trichostrongylus colubriformis | species | 0 | 1 |
| canada | quebec | trichostrongylus colubriformis | species | 0 | 1 |
| chile | | trichostrongylus colubriformis | species | 7 | 0 |
| china | heilongjiang | trichostrongylus colubriformis | species | 0 | 1 |
| china | inner mongolia | trichostrongylus colubriformis | species | 0 | 1 |
| china | yunnan | trichostrongylus colubriformis | species | 1 | 0 |
| democratic republic of the congo | province orientale | trichostrongylus colubriformis | species | 0 | 1 |
| egypt | | trichostrongylus colubriformis | species | 1 | 0 |
| egypt | matrouh governorate | trichostrongylus colubriformis | species | 0 | 1 |
| egypt | north sinai governorate | trichostrongylus colubriformis | species | 0 | 1 |
| fiji | | trichostrongylus colubriformis | species | 0 | 1 |
| france | | trichostrongylus colubriformis | species | 3 | 0 |
| france | centre region | trichostrongylus colubriformis | species | 0 | 2 |
| france | limousin region | trichostrongylus colubriformis | species | 0 | 1 |
| france | poitou-charentes region | trichostrongylus colubriformis | species | 0 | 1 |
| germany | bavaria | trichostrongylus colubriformis | species | 0 | 1 |
| germany | hesse | trichostrongylus colubriformis | species | 0 | 1 |
| ghana | | trichostrongylus colubriformis | species | 28 | 0 |
| guadeloupe | | trichostrongylus colubriformis | species | 1 | 1 |
| india | | trichostrongylus colubriformis | species | 3 | 0 |
| india | haryana | trichostrongylus colubriformis | species | 0 | 1 |
| india | jammu and kashmir | trichostrongylus colubriformis | species | 0 | 1 |
| india | kerala | trichostrongylus colubriformis | species | 1 | 0 |
| indonesia | north sumatra province | trichostrongylus colubriformis | species | 0 | 1 |
| iran | | trichostrongylus colubriformis | species | 12 | 0 |
| iran | ardabil province | trichostrongylus colubriformis | species | 10 | 0 |
| iran | gilan province | trichostrongylus colubriformis | species | 57 | 0 |
| iran | khuzestan province | trichostrongylus colubriformis | species | 2 | 0 |
| iran | mazandaran province | trichostrongylus colubriformis | species | 0 | 1 |
| italy | piemonte region | trichostrongylus colubriformis | species | 0 | 1 |
| italy | sardinia autonomous region | trichostrongylus colubriformis | species | 1 | 0 |
| kenya | | trichostrongylus colubriformis | species | 1 | 0 |
| laos | | trichostrongylus colubriformis | species | 12 | 0 |
| laos | bolikhamsai province | trichostrongylus colubriformis | species | 10 | 0 |
| laos | khammouan province | trichostrongylus colubriformis | species | 4 | 0 |
| laos | savannakhet province | trichostrongylus colubriformis | species | 17 | 2 |
| maldives | | trichostrongylus colubriformis | species | 0 | 1 |
| mozambique | maputo city | trichostrongylus colubriformis | species | 0 | 1 |
| mozambique | maputo province | trichostrongylus colubriformis | species | 0 | 1 |
| new zealand | | trichostrongylus colubriformis | species | 54 | 0 |
| new zealand | gisborne | trichostrongylus colubriformis | species | 0 | 2 |
| nigeria | oyo | trichostrongylus colubriformis | species | 0 | 1 |
| nigeria | sokoto | trichostrongylus colubriformis | species | 0 | 1 |
| russia | moscow city | trichostrongylus colubriformis | species | 2 | 0 |
| south africa | gauteng province | trichostrongylus colubriformis | species | 0 | 2 |
| south africa | kwazulu-natal province | trichostrongylus colubriformis | species | 0 | 1 |
| tanzania | iringa region | trichostrongylus colubriformis | species | 0 | 1 |
| thailand | kanchanaburi province | trichostrongylus colubriformis | species | 1 | 0 |
| thailand | khon kaen province | trichostrongylus colubriformis | species | 2 | 0 |
| thailand | loei province | trichostrongylus colubriformis | species | 3 | 0 |
| thailand | roi et province | trichostrongylus colubriformis | species | 6 | 0 |
| thailand | sakon nakhon province | trichostrongylus colubriformis | species | 2 | 0 |
| u.s. virgin islands | | trichostrongylus colubriformis | species | 0 | 1 |
| united kingdom | england | trichostrongylus colubriformis | species | 0 | 1 |
| united states | | trichostrongylus colubriformis | species | 15 | 0 |
| united states | california | trichostrongylus colubriformis | species | 0 | 1 |
| united states | georgia | trichostrongylus colubriformis | species | 0 | 1 |
| united states | mississippi | trichostrongylus colubriformis | species | 0 | 1 |