Epidemiological Study of Salmonella typhi and Its Month-Wise Effect on Different Age Groups in Dehradun

Introduction: Salmonella typhi is a bacterial disease caused by contaminated food and water, also known as foodborne and waterborne infection, it transmitted via faeco-oral route.

Materials and Methods: A total of 204 clinical isolates were considered for its proposed study. IgM/IgG rapid card test (CTK Biotech) was used for the detection and Widal test (BEACON) was also performed for the same.

Duration: March 2020 to November 2020.

Results: A total of 204 blood samples were analyzed with clinically suspected cases of typhoid fever, out of which, some cases showed reactiveness and 50.98% showed negative for Salmonella typhi. Widal test showed reactive result for O Ag (Somatic Antigen) and H Ag (flagellar antigen) and 8.82% IgG and 42.64% (monthly) IgM antibody showed positive result.

Conclusion: Typhoid IgM/IgG antibody rapid card test and Widal Antigen test, a simple and rapid method for the detection of Salmonella typhi bacterium in patient’s serum by serological techniques. Maximum number of positive cases were in the month of August, 2020 and September, 2020. The age group between 21-40 years were most infected by Salmonella typhi.