Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for…
Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid.
Plasmodium vivax / UTI test
Streptococcus pneumoniae / Widal test
Salmonella typhi / Anthrone test
Salmonella typhi / Widal test
Solution
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 has been the anchor for diagnosis of typhoid fever for decades. It is used to quantify agglutinating antibodies against H and O antigens of S. typhi.