Human Health and Diseases Question 22
22. Widal test is used for the diagnosis of [2010]
(a) Malaria
(b) Pneumonia
(c) Tuberculosis
(d) Typhoid
Show Answer
Answer : d
Hints & Solutions
(d) Widal test is used for the diagnosis of typhoid. It is an agglutination test for the presence of antibodies against the Salmonella organisms, which cause typhoid fever. Salmonella typhimurium is a pathogenic Gram-negative bacteria predominately found in the intestinal lumen. Its toxicity is due to an outer membrane consisting largely of lipopolysaccharides (LPS) which protect the bacteria from the environment.
