Widal test report shows S. Typhi O 1:40 positive, S. Typhi H 1:160 positive, S. Para Typhi AH negative, and S. Para Typhi BH negative. Is this typhoid high, medium, or low? What are the common medicines for this?

Answered by 1 Apollo Doctors

Dr Vasanthasree Nair

General Practitioner

MBBS
15+ Yrs

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These titres suggest low to moderate past exposure or early typhoid. Widal is not very specific, clinical symptoms matter. Consider repeating test or doing Typhidot or blood culture.

Dr. Vasanthasree Suggests...

Take a Typhoid Test Test or Take a CULTURE AND SENSITIVITY - AEROBIC (BLOOD) Test

Book Typhoid Test Test Book CULTURE AND SENSITIVITY - AEROBIC (BLOOD) Test

Answered 12/09/2025

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My Widal test report shows S Typhi O all positive till 1/320, S Typhi H all positive till 1/160, S Para Typhi A all positive till 1/40, and S Para Typhi B all positive till 1/40.

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S. Typhi O 1:40 dilution, S. Typhi H 1:20 dilution, S. Para typhi A H less than 1:20 dilution, and S. Para typhi B H less than 1:20 dilution are the results of the lab test. Is this typhoid severe and how many days will it take to cure?

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My Widal report shows S. Paratyphi A from 1/20 to 1/160 are all positive, S. Typhi H and O are positive at 1/20, and S. Paratyphi B is negative. All other sections are negative. Do I have typhoid disease? What should I do regarding this? Is it in a lethal or dangerous condition or is there no need to be anxious?

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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.