Inferring the proportion of undetected cholera infections from serological and clinical surveillance in an immunologically naive population.

was several times the clinical attack rate. Half of the population ≥2 years showed serological evidence of infection.For every reported clinical case ≥5 years old, 3.2 (95% CrI 3.0-3.4) people were infected.Children 2-4 years old had a lower infection rate, which was not significantly different from the clinical attack rate.