Question

If a person is positive in Widal test, then that person is infected by which pathogen?

• A. Streptococcus pneumoniae
• B. Plasmodium falciparum
• C. Salmonella typhi
• D. Entamoeba histolytica

Hint:

Widal test = Typhoid = Salmonella typhi. It's a classic diagnostic test for enteric fever.

Answer 1

The Correct Option is C

The Widal test is a serological test used to detect the presence of antibodies against Salmonella typhi, the causative agent of typhoid fever.
Hence, a positive Widal test indicates infection with typhoid.