Changes

==Prognosis==

==Prognosis==

Fair in cases that are rapidly treated but poor in foals with evidence of hypovolaemia and septic shock.  Surgical cases also carry a poorer prognosis than cases which are resolved medically.  In a recent study, long term survival of 25 affected horses was 33%(37).

Fair in cases that are rapidly treated but poor in foals with evidence of hypovolaemia and septic shock.  Surgical cases also carry a poorer prognosis than cases which are resolved medically.  In a recent study, long term survival of 25 affected horses was 33%(37).

*Regular worming programme until at least 15 months of age that prevents a build-up of large ascarid burdens in the foal:

*Regular worming programme until at least 15 months of age that prevents a build-up of large ascarid burdens in the foal:

**Macrocyclic lactones (Ivermectin in Equimax or Eqvalan) 0.2mg/kg at 60 day intervals (NB: resistance is present)

**Macrocyclic lactones (Ivermectin in Equimax or Eqvalan) 0.2mg/kg at 60 day intervals (NB: NOT the drug of choice because resistance is widespread)

**Tetrahydropyrimidines (Pyrantel pamoate in Strongid) 6.6mg/kg at 56 day intervals

**Tetrahydropyrimidines (Pyrantel pamoate in Strongid) 6.6mg/kg at 56 day intervals

**Benzimidazoles (Fenbendazole in Panacur) 10mg/kg at 56 day intervals

**Benzimidazoles (Fenbendazole in Panacur) 10mg/kg at 56 day intervals