Nobles SG SR. a live freeze dried vaccine against fowl typhoid was used for its safety
and the potency in chickens of 8 weeks age. In safety test seven chickens were inoculated
with vaccine containing approximately 500 million viable organisms. No local or
systemic reactions in vaccinated birds were observed within seven days. In potency trial
of this vaccine, 15 chickens of 8 weeks age were inoculated with vaccine containing 50
million viable organisms and equal number of birds were inoculated with only vaccine
diluent. Vaccinated birds did not die while 11 out of 15 birds inoculated with only
vaccine diluent died. However, vaccinated birds showed mild diarrhoea. The diarrhoea
subsided without any treatment.

Nobles SG SR. a live freeze dried vaccine against fowl typhoid was used for its safety
and the potency in chickens of 8 weeks age. In safety test seven chickens were inoculated
with vaccine containing approximately 500 million viable organisms. No local or
systemic reactions in vaccinated birds were observed within seven days. In potency trial
of this vaccine, 15 chickens of 8 weeks age were inoculated with vaccine containing 50
million viable organisms and equal number of birds were inoculated with only vaccine
diluent. Vaccinated birds did not die while 11 out of 15 birds inoculated with only
vaccine diluent died. However, vaccinated birds showed mild diarrhoea. The diarrhoea
subsided without any treatment.