The epidemiology of ''O.ostertagi'' is complex due to the hardyness of the eggs in the environment and the ability of larvae to hyperbiose. Clinical infections of this worm are termed [[Ostertagiosis - Cattle|Ostertagiosis]], the clinical page explains the pathophysiology and the epidemiology of the disease. | The epidemiology of ''O.ostertagi'' is complex due to the hardyness of the eggs in the environment and the ability of larvae to hyperbiose. Clinical infections of this worm are termed [[Ostertagiosis - Cattle|Ostertagiosis]], the clinical page explains the pathophysiology and the epidemiology of the disease. |