[2] This nematode is now distributed worldwide, as cases of equine infections have been found in Canada, Florida, the Nordic regions, and Arabian horses alike.

According to a 1997 paper, neurohelminthiases in general are more prevalent where environmental factors and poor sanitation assist the spread of parasitism between man and animals, and have been facilitated by population shifts and improved transport.

[6] An extremely rare triple fatality from this worm was reported in Wales after kidneys from a man experiencing homelessness and alcohol addiction who ultimately died of an unknown meningitis were transplanted into two recipients.

[8][9] All known cases of human infections were only found post mortem and had been fatal; they had not been treated with antihelminthic drugs (such as ivermectin and benzimidazole).

[5] When there is occurrence of a neurohelminthic disease, it is fatal, as there exist no tests that can be done to identify these species and apply effective treatment.

[citation needed] Lim CK, Crawford A, Moore CV, Gasser RB, Nelson R, Koehler AV, Bradbury RS, Speare R, Dhatrak D, Weldhagen GF.