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What is Ito's test is used in the diagnosis of the following infection: and explain in detail?
The Ito Reenstierna test was developed for detecting Haemophilus ducreyi using a commercial antigen by intradermal testing and proved positive in 90% of cases. Gram staining shows 'school of fish' or 'railroad track' appearance which is characteristic. Nucleic acid amplification tests are now the optimal method of diagnosing H. ducreyi. Ref: Oxford Textbook of Medicine: Infection edited by David Warrell, Timothy M. Cox, John Fih, Estee Torok, 2012, 375-376.