puits (1) temps (durée) (1) surveillance (1) vitesse (1) épuration (1) santé publique (1) besoin (1) surveillance (1) analyse (1) effet (1) investigation (1) delta (1) coût (1) densité (1) Dynamics (1) Monitoring (1) Density (1) Costs (1) Balances (Weighing instruments) (1) Programs (1) Molecular epidemiology (1) Work (1) Weights and measures (1) Time (1) Threats (1) Swiss (1) Struggle (1) Strategy (1) Speed (1) Public health (1)