Characteristics Frequency (%) IgG/IgM   Males   Infected 26 (28.0) 13/13                                        Non-infected 67 (72.0) 80/80     Females   Infected 48 (33.8) 29/19              Non-infected 94 (66.2) 113/123    Both   Infected  74 (31.5) 42/32                      Non-infected 161 (68.5)   Total 235 (100) 235

Regression and T-test statistical analysis: 95% Confidence interval of difference at F cal>F tab (1.776>0.969) and t cal>t tab (6.5>5.0).

Table 3: Salmonella enterica serovar Typhi and Paratyphi infection among Food handlers studied in Lagos.