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: 1:80 (Positive) S. Typhi H: 1:160 (Positive) S. Para Typhi AH: 1:160 (Positive) S. Para Typhi BH: 1:80 (Positive) Malaria parasite: Not seen Does this indicate a high, medium, or low likelihood of typhoid? What common medicines are usually prescribed, and are there any food or water precautions I should follow?

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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.