Baseline Widal Titre Amongst Healthy Individuals in Ahmedabad, India

Dr. Minesh G Vadsmiya; Dr. Hasumati L. Solanki; Dr. Vyoma Chudasama

Volume : III, Issue : IX, September - 2014

Baseline Widal Titre Amongst Healthy Individuals in Ahmedabad, India

Dr. Minesh G Vadsmiya, Dr. Hasumati L. Solanki, Dr. Vyoma Chudasama

Abstract :

Single Widal test always carries a risk of wrong interpretation as 4–fold rise in titres are required for confirmation so this study was carried out to determine the baseline Widal titre of community. Blood samples (n= 200) were tested by Widal slide agglutination test. Of the 200 serum samples, 110 samples were positive for agglutinins ( 1 ≥ in 20) and 90 are negative ( 1 ≤ in 20). However, 94% samples showed a titre which was equal to or less than 1 in 40 to the O antigen and 86% samples had a titre which was equal to or less than 1 in 40 to the H antigen of Salmonella typhi. Based upon the results of our study,the baseline titre for the O and H antibodies of S. typhi was found to be 1: 40.