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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Fever, Feeling Cold. Blood Tests Showed Widal S Typhi O 1/80, Widal S Par A-0 And B-0 1/40, C-0 1/160, S Typhi H 1/320. Explain

hi doc.i have fever for 4 days and always feel cold. so i take the blood test. i want to ask the meaning of the blood test that i had.
the result is
widal s. typhi o 1/80
widal s.par A-O 1/40
widal par B-O 1/40
widal s. par C-O 1/160
widal s. typhi H 1/320
widal s. par A-H negatif
widal s par B-H 1/160
Widal s par C-H negatif
thanks
Sat, 14 Sep 2013
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Pathologist and Microbiologist,  's  Response
Hello and welcome to HCM,
Widal test is done for infection with salmonella typhi and salmonella paratypi A, B and C causing the clinical disease typhoid.
The interpretation of Widal test depends on a number of factors.
1. One value of widal is not of much value. Rising titres of two consecutive tests is more significant.
2. Base line titres og O antigen >1:80 and H antigen >1:160 is significant.
3. A four fold increase in the titres after 4 weeks is more significant.
4. Widal test comes as reactive in first week of disease through 4 weeks.
5. If one has taken antibiotics before the test, widal test may be negative.

In your case, S. typhi H antigen has titres of 1:320. This is significant and suggests infection with salmonella typhi.
Treatment for typhoid should be started.
Consult your physician for the management.

Thanks and take care
Dr Shailja P Wahal

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Fever, Feeling Cold. Blood Tests Showed Widal S Typhi O 1/80, Widal S Par A-0 And B-0 1/40, C-0 1/160, S Typhi H 1/320. Explain

Hello and welcome to HCM, Widal test is done for infection with salmonella typhi and salmonella paratypi A, B and C causing the clinical disease typhoid. The interpretation of Widal test depends on a number of factors. 1. One value of widal is not of much value. Rising titres of two consecutive tests is more significant. 2. Base line titres og O antigen 1:80 and H antigen 1:160 is significant. 3. A four fold increase in the titres after 4 weeks is more significant. 4. Widal test comes as reactive in first week of disease through 4 weeks. 5. If one has taken antibiotics before the test, widal test may be negative. In your case, S. typhi H antigen has titres of 1:320. This is significant and suggests infection with salmonella typhi. Treatment for typhoid should be started. Consult your physician for the management. Thanks and take care Dr Shailja P Wahal