Background: In India, an opportunistic infection with HIV and associated complications accounts for considerable proportion of mortality. There exists definite CD4 cell count correlation with opportunistic infection in HIV patients. Objectives: To document the prevalence of HIV with correlation of different opportunistic infection with CD4 cell count. Material and Method: A total of 174 HIV positive patients either hospitalized or ART POD were studied for finding the spectrum of opportunistic infection and for HIV prevalence. Various samples were collected as per symptoms and clinical presentation. Result: Among opportunistic infection, most common were bacterial infection with 72.5%, followed by fungal infection 42.1% and parasitic infection with 25.8%. TB in 21 patients and candidiasis in 5 patients were found in CD4 cell count <500 cell/μl followed by chronic diarrhoea with CD4 cell count <200 cell / μl. Conclusion: Prevalence of HIV infection in persons attending ICTC is 11.3%. TB is the most common opportunistic infection followed by candidiasis and diarrhoea.