<s>[INST] female,age 27.i am suffering from typhoid from last 12 days . now my fever is normal. i am taking antibiotic medicine as prescribed by doctor. yesterday i underwent widal test, tested positive. how long will reports show positive? any serious issue ? [/INST] Hello ,I understand your concern. I am Dr. Arun Tank, infectious disease specialist, answering your concern.Typhoid infection usually requires a 15 to 20 days depending on the individual situation.Widal test is diagnostic as well as prognostic tests available. It will clear up once the bacteria Salmonella typhi clears from the system. So once your antibiotics kill all the bacteria widal test becomes negative. Please complete the treatment to get complete cure from the infection.Glad to answer your further concern. You can contact me on bit.ly/DrArunWe wish you a best health at healthcare magic. Thank you,Dr. Arun Tank </s>