thanks for writing to us.
Thanks for writing to us.
Typhoid test (widal test) should be performed after 7 days of fever.There should be rising titre of antibodies to Typhi O or H antigen.A single value of this test has no significance.Normal titres of Typhi H is 160 and Typhi O is 100.Values above this has significance if it shows rising titres in next test.
Once you get typhoid fever
typhoid lab test (widal) may remain positive for a long up to years in borderline titres of less than 160.Relapse rate for typhoid is up to 10-20% and 3-4% patients can have chronic carrier state.
As you have persistent fever after taking 7 days of antibiotics there could be either relapse or resistant typhoid
or fever could be due to some another reason.
You may need to test for other causes of fever like malaria, dengue,leptospirosis
, etc.This needs clinical correlation hence get physician opinion for management.
Also you can get blood culture
for salmonella typhi
if fever does not resolve.
Hope this could help you.
Wish you good health.