You had Typhoid
infection in the past and had taken antibiotic.
Now your blood titers are positive for Typhoid and the titer values are also significantly high.
You may be on a chronic carrier state.
This may be due to inadequate course of antibiotic or the choice of the antibiotic may not be correct.
There is a risk of you spreading the infection to others.
Take a full course of antibiotic for a longer duration of time and repeat the blood test