Baseline Widal titres in healthy children.

ABSTRACT

OBJECTIVE: To determine the baseline Widal titres in apparently healthy children in Davangere. METHODS: Cross-sectional study was done on 250 children. Widal titers were found using tube agglutination test. RESULTS: Out of 250,64.2% had a titre of less than 120,22.4% had a titre equal to 120,9.6% had a titre of 140 and 3.6% had a titre of 180 to 'O' antigen and 67.2% had a titre of less than 120, 21.2% had a titre equal to 120, 8% had a titre of 140 and 3.6% had a titre of 180 to 'H' antigen of S. enterica subsp. enterica ser. Typhi. No children in age group 6 months-2 years had a titre of 180 to either antigen. All children in this age group had a titre of less than 120 to AH antigen and older children had a titre upto 140 dilution. CONCLUSION: Baseline titres for either S. enterica subsp. enterica ser. Typhi antigen in 6 month-2 year was 140 and older children was 180. Baseline titres for H antigen of S. enterica subsp. enterica ser. Paratyphi A in 6 month-2 year was less than 120 and for older children was 140 dilution.