Aim: Seroprevalence study in Irula tribe of Marakkanam, Tamil Nadu State was carried out for certain bacterial (typhoid, syphilis and leptospirosis) and viral infection (hanta, hepatitis B and human immunodeficiency virus (HIV)).
Result: Highest seroprevalence was observed for leptospirosis (61.1%) followed by, hepatitis B virus surface antigen (11.