Scrub Typhus and its co-infection with Leptospirosis at a tertiary care hospital in Uttar Pradesh.

The diagnosis of Scrub Typhus is now improving with the availability of an array of serological tests at the majority of diagnostic centres and of molecular tests at advanced laboratories. Our study focuses on evaluating the spectrum of Scrub Typhus and its coinfection with Leptospirosis in patients presenting with acute febrile illness. A total of 1743 blood samples were collected from both In and Out Patient Department (OPD) patients and analyzed for anti Orientia tsutsugamushi and anti-Leptospira IgM antibodies. Our study showed the presence of Scrub Typhus IgM antibodies in 20.7% of all the cases of acute febrile illness. We also found an interesting correlation of Scrub Typhus with Leptospirosis owing to the presence of co-infection in 8.4% of Scrub Typhus cases paving a way for future research in this regard.