<s>[INST] hello sir  i was infected from typhoid and took medication one month back and now from two days i have fever and went for a blood test .the result was typhi O  1:160 typhi H 1:80 typhi AH and BH 1:40 WHATS the normal negetive value of these typhi and what medications should i take please reply [/INST] Dear Friend. Welcome to Chat Doctor. I am Chat Doctor. I have read your query in detail. Furthermore, I understand your concern. Only rising titles of Tidal are important. They can rise or can persist for months even after an acute infection or subclinical infection. I would advise you to follow:1. Hemogram2. Blood Culture for Salmonella3. Stool Culture for Salmonella. Review with reports. This is my best advice for you with the available details, if you have any further query, please ask me. Stay HealthyChatDoctor, MD </s>