Table 2. Prior information (uniform distributions) based on expert opinion.

Parameters	Constrains
Sensitivity of the microscopy for the detection of infected individuals	[0.7–1]
Specificity of the microscopy for the detection of non-infected individuals	[0.9–1]
Probability to have a positive result for the ELISA if the individual is infected and positive for the microscopy	[0.7–1]
Probability to have a positive result for the ELISA if the individual is infected and negative for the microscopy	[0–1]
Probability to have a negative result for the ELISA if the individual is not infected and negative for the microscopy	[0–1]
Probability to have a negative result for the ELISA if the individual is not infected and positive for the microscopy	[0–1]
Probability to have a positive result for the PCR if the individual is infected and positive for the microscopy and the ELISA**	[0.98–1]
Probability to have a positive result for the PCR if the individual is infected, positive for the microscopy and negative for the ELISA**	[0.98–1]
Probability to have a positive result for the PCR if the individual is infected, negative for the microscopy and positive for the ELISA**	[0.75–1]
Probability to have a positive result for the PCR if the individual is infected and negative for the microscopy and the ELISA**	[0.75–1]
Probability to have a negative result for the PCR if the individual is not infected and negative for the microscopy and the ELISA**	[0.95–1]
Probability to have a negative result for the PCR if the individual is not infected, negative for the microscopy and positive for the ELISA**	[0.9–1]
Probability to have a negative result for the PCR if the individual is not infected, positive for the microscopy and negative for the ELISA**	[0.9–1]
Probability to have a negative result for the PCR if the individual is not infected and positive for the microscopy and the ELISA**	[0.9–1]

ELISA = Enzyme-Linked Immunosorbent Assay; PCR = Polymerase Chain Reaction.

**for Vietnam. Peru Iquitos and Peru Jaen only.