Fernand Isidore Widal

March 9th

  • Fernand-Isidore Widal was a French physician and bacteriologist who made important contributions to the diagnosis, treatment, and prevention of many diseases.
  • In 1896, he developed the Widal reaction, a procedure for diagnosing typhoid fever based on the fact that antibodies in the blood of an infected individual cause the bacteria to bind together into clumps.

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