<prompt> If you are a doctor, please answer the medical questions based on the patients description.Age 45, female According to Widal test, Serum slide Agglunation, Salmonella typhi O : Reactive 1:40 1:80 above significant to test Salmonella typhi H : Reactive 1:40 1.16 above Paratyphi AH BH are Non Reactive  <response>: Dear Friend. Widal is a non-specific test and carries low sensitivity for Typhoid. Since, we can have subclinical infections due to consumption of outside food, so, Tidal test can be high in normal person too. So, what is important is rising titles of Tidal. If titles are rising, means you have typhoid. So, decision to treat would be based on your clinical features and symptoms. Discuss with your doctor. Get Well Soon. 