puits (1) surveillance (1) santé (1) extraction (1) épidémie (1) ADN (1) investigation (1) analyse (1) Methods (1) Genes (1) Water (1) Vibrio cholerae (1) Health (1) Developing countries (1) DNA (1) Days (1) Confirmation (1) Cholera (1) Bacteria (1) Methods (1) Detection (1) Health (1)