A STUDY ON THE PREVALENCE OF ABO BLOOD GROUPS AND RHESUS FACTOR AMONG THE GIRL STUDENTS AROUND PERAMBALUR IN TAMILNADU

Blood groups are genetically determined. The frequencies of ABO and Rh blood groups vary from population to population and from time to time in the same region. A study was conducted among selected Government Higher Secondary Schools of Perambalur District from December 2016 to July 2017. Blood groups of 2148 girl students from 15 schools were screened by antigen antibody agglutination method using commercially available antisera. The study revealed that the commonest ABO blood group was O with 34.64%, followed by B group with 33.75%, A with 22.39% and AB with the least % of 9.22. Rh+ type were 96.51% and Rh- type were making up to 3.49