[Cross-reacting antigens of Opisthorchis felineus and Salmonella typhi and their possible effect on the clinical course of typhoid fever].

The experiments on rabbits immunized with a complex O. felineus antigen and spirit abdominal typhoid vaccine enriched with Vi-antigen, as well as studies on patients with chronic opisthorchiasis and bacterial carriers of S. typhi have established the presence of cross-reacting antigens in abdominal typhoid and opisthorchiasis pathogens. It is suggested that these antigens play an essential role in the development and outcome of abdominal typhoid secondary to chronic opisthorchiasis invasion.