Question

Name the causative agent and diagnostic test of typhoid.

Answer 1

The cause is the bacterium Salmonella Typhi, also known as Salmonella enterica serotype Typhi, growing in the intestines and blood.

Testing a sample of bone marrow is a more accurate way of diagnosing typhoid fever.

Answer 2

Salmonella typhi, the causative agent of typhoid fever, is approximately 50,000 years old.

Assays that identify Salmonella antibodies or antigens support the diagnosis of typhoid fever, but these results should be confirmed with cultures or DNA evidence. The Widal test was the mainstay of typhoid fever diagnosis for decades. It is used to measure agglutinating antibodies against H and O antigens of S typhi.

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