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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can You Tell Whether The Typhoid Is Positive Or Not By These Reports?

my brother is 3 years old we have taken the widal test for typhoid please can anybody tell me the typhoid is present or not
report:
salmonella typhi o antigen 1:160
salmonella typhi h antigen 1:160
salmonella paratyphi ah 1:80
salmonella paratyphi bh 1:80
Thu, 13 Mar 2014
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Infectious Diseases Specialist,  's  Response
Hello,
Welcome to HCM,
The Widal test is a serological test for typhoid, this test is not a diagnostic test but the test can beused in a suspected case of typhoid fever where the patient is having fever for more than 7 days.

The typhoid fever can be suspected if there is a raising titres of fourfold increase in the titer (e.g., from 1:40 to 1:160) in the course of the infection.
The Widal test is positive if Salmonella typhi O and H antigen triter is more than 1:160 in an active infection.

The lab reports suggest me that your brother is may be having typhoid fever, because there is a raising titres of O and H antigens.
Thank you.
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Can You Tell Whether The Typhoid Is Positive Or Not By These Reports?

Hello, Welcome to HCM, The Widal test is a serological test for typhoid, this test is not a diagnostic test but the test can beused in a suspected case of typhoid fever where the patient is having fever for more than 7 days. The typhoid fever can be suspected if there is a raising titres of fourfold increase in the titer (e.g., from 1:40 to 1:160) in the course of the infection. The Widal test is positive if Salmonella typhi O and H antigen triter is more than 1:160 in an active infection. The lab reports suggest me that your brother is may be having typhoid fever, because there is a raising titres of O and H antigens. Thank you.