The Widal test, developed in 1896 and named after its inventor, Georges-Fernand Widal, is an indirect agglutination test for enteric fever or undulant fever whereby bacteria causing typhoid fever are mixed with a serum containing specific antibodies obtained from an infected individual.
The Widal test is a widely used serological diagnostic tool for detecting enteric fever, including typhoid and paratyphoid fevers. These infections are caused by the bacteria Salmonella Typhi and Salmonella Paratyphi.
Widal Test is an agglutination test which detects the presence of serum agglutinins (H and O) in patients serum with typhoid and paratyphoid fever. When facilities for culturing are not available, the Widal test is the reliable and can be of value in the diagnosis of typhoid fevers in endemic areas.
The Widal test is a blood test used to help diagnose typhoid and paratyphoid fever. It works by detecting antibodies your immune system produces in response to Salmonella Typhi, the bacterium that causes typhoid.
What Is the Widal Test and How Accurate Is It? - ScienceInsights
What is Widal Test? Widal test is an agglutination test used for diagnosis of enteric fever (Typhoidal or Paratyphoidal fever) serologically in clinical/diagnostic laboratories. This tests measure agglutinating serum antibodies level produced against the O (somatic) and H (flagellar) antigen of Salmonella Typhi and Paratyphi A, B, and C.
Georges Fernand Isidor Widal, a French physician and bacteriologist, developed the Widal test in 1896. Originally used to diagnose Salmonella paratyphi B infection, the test was later refined and used to diagnose various forms of enteric fevers.
The Widal test, also referred to as the Widal agglutination test, is a serological test used for a presumptive diagnosis of typhoid fever and paratyphoid fever, which are caused by certain bacteria named Salmonella.