10.22376/ijpbs.2019.10.1.p1-12 Volume 3 Issue 1 2012 (January - March) Morbidity and mortality in HIV diseases is due to the occurrence of threatening opportunistic infections. lessThan i greaterThan Toxoplasma gondii lessThan /i greaterThan is a cellular parasite (causative agent of Toxoplasmosis). lessThan i greaterThan Toxoplasma lessThan /i greaterThan has been recognized as an important cause of morbidity and mortality among immunocompromised patients .The present study focuses on the incidence of Toxoplasmosis among HIV sero-positive. In the present study lessThan i greaterThan T.gondii lessThan /i greaterThan co-infection was observed in 23% of HIV sero positive patients. 50% female and 57.7% of pediatric group were infected and were statistically significant (p lessThan 0.01). Out of 23 pediatric patients studied for CD4:CD8 ratio, 14 patients were showing significant antibody titer with CD4:CD8 ratio in the range of 0.1- 0.7. The viral load of 14 patients was between 21,600 – 4, 97,429 eq/ml .Out of 14 lessThan i greaterThan T.gondii lessThan /i greaterThan positive patients, 7 patients showed very weak viremia and remaining 7 showed moderate viremia Aneymol V. S. And Williamson M. HIV, Co-infection, Sero-prevalence, Toxoplasma 367-371