Evaluation of a Rapid Immunochromatographic Dipstick Kit for Diagnosis of Cholera Emphasizes Its Outbreak Utility

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  • Mukherjee Piyali
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India
  • Ghosh Santanu
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India
  • Ramamurthy T.
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India
  • Bhattacharya Mihir K.
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India
  • Nandy Ranjan K.
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India
  • Takeda Yoshifumi
    Collaborative Research Center of Okayama University for Infectious Diseases at National Institute of Cholera and Enteric Diseases, India
  • Nair G. Balakrish
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India
  • Mukhopadhyay Asish K.
    Division of Bacteriology, National Institute of Cholera and Enteric Diseases, India

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<p>We evaluated the Crystal VC(R), a commercially produced dipstick, for the rapid detection of Vibrio cholerae serotypes O1 and O139 directly from the stool samples of hospitalized diarrheal patients using the conventional bacteriological method as gold standard. The sensitivity and specificity of the dipsticks were about 92 and 73%, respectively. Introduction of the PCR-based method along with the classical bacteriological method as the gold standard for the evaluation of a kit may improve the sensitivity and specificity of the assay. The dipstick method requires minimal technical skill, and the test can be read in about 10 min. This dipstick test has the potential to act as an early warning system for cholera in many developing countries, especially during the start of an outbreak, which would ultimately lead to a decrease in the spread of the disease as well as the case fatality rate. Furthermore, the use of a rapid detection test will improve surveillance and thus reduce the burden of disease estimates, especially in remote settings.</p>

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