Studies on heterologous resistance betweenSchistosoma bovisandFasciola giganticain Sudanese cattle

Abstract

AbstractUsing the local strains ofSchistosoma bovisandFasciola gigantica, it was shown that Sudanese zebu calves with mature primary infections ofF. giganticawere highly resistant to challenge withS. boviscercariae, and vice versa. Liver enzyme tests showed that, in both cases, the primary infections had caused some liver damage. Primary infection with irradiatedS. Boviscercariae, which did not cause significant liver damage, did not protect significantly against challenge withF. gigantica.