Typhoid fever continues to be a global health problem, with an estimated 12 to 33 million cases occurring worldwide each year. India is an endemic country; sera of particular healthy individuals contain antibodies capable of reacting to a variable titre in Widal test due to previous stimuli. It is therefore, important to establish the antibody level in the normal population by “Widal baseline titre” in a particular locality. The serum samples are processed by Widal tube agglutination test to find out the baseline Widal titre. I | Determination of widal baseline titre among healthy adult individuals in Tumkur, India
