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Reduction of cholera in Bangladeshi villages by simple filtration

2003; National Academy of Sciences; Volume: 100; Issue: 3 Linguagem: Inglês

10.1073/pnas.0237386100

1091-6490

Rita R. Colwell, Anwar Huq, M. Sirajul Islam, K. M. A. Aziz, Mohammad Yunus, Nisha Khan, Ayesha S. Mahmud, R. Bradley Sack, G. Balakrish Nair, J. Chakraborty, David A. Sack, Estelle Russek‐Cohen,

Water-Energy-Food Nexus Studies

Based on results of ecological studies demonstrating that Vibrio cholerae, the etiological agent of epidemic cholera, is commensal to zooplankton, notably copepods, a simple filtration procedure was developed whereby zooplankton, most phytoplankton, and particulates >20 microm were removed from water before use. Effective deployment of this filtration procedure, from September 1999 through July 2002 in 65 villages of rural Bangladesh, of which the total population for the entire study comprised approximately 133,000 individuals, yielded a 48% reduction in cholera (P < 0.005) compared with the control.