How was your first episode of typhoid fever
diagnosed? If by WIDAL
what was the titre?
And how long were you treated with antibiotic?
And what was the test done now? WIDAL can remain positive for upto 3 months.
It might be something else like viral fever
too. So have a complete blood count
, CRP etc done if you are worried.
And if treated with appropriate antibiotics for adequate duration, chances of relapse in typhoid are less.
Hope you find my answer useful.