''H. rubidis'' is very similar to ''[[Ostertagia]]'' (which does not occur in pigs) in appearance, life-cycle, epidemiology and pathogenesis, but pigs do not develop any useful immunity. | ''H. rubidis'' is very similar to ''[[Ostertagia]]'' (which does not occur in pigs) in appearance, life-cycle, epidemiology and pathogenesis, but pigs do not develop any useful immunity. |