Behandlingen udryddede ikke fuldstændigt alle bakterierne i åndedrætssystemet, og visse kyllinger havde stadig sygdomssymptomer, men antallet af smitteramte dyr var betydeligt mindre end i ubehandlede grupper af kyllinger.
The treatment did not completely eliminate all bacteria in the respiratory system and some birds still showed the disease; however, the number of affected animals was significantly smaller than in an untreated group of birds.