<prompt> Bacterial Index deals withTuberculosisLeprosySyphilisGonorrhea  <response>: In leprosy, Bacterial Index is the only objective way of monitoring the benefit of treatment. 0 No bacilli in any of 100 oil immersion fields1 1-10 in 1002 1-10 in 103 1-10 in each field4 10-1005 100-10006 more than 1000It is calculated for each site examined an average is taken.Park 23e pg: 314 