Table 1.

Comparison of the seroprevalence in Mali and Martinique using the classical method and model-based classification.

	Mali—Classical method	Mali—Model-based classification	Martinique—Classical method	Martinique—Model-based classification
CHIKV Positive	1.8% (N = 14)	13.3% (95% CrI: 9.4%–17.9%)	45.2% (N = 28)	98.4% (95% CrI: 94%–100%)
CHIKV Negative	61.3% (N = 486)	86.7% (95% CrI: 82.1%–86.7%)	0% (N = 0)	1.6% (95% CrI: 0%–5.7%)
ONNV Positive	26.9% (N = 213)	29.7 % (95% CrI: 25.3%–34.0%)	16.1% (N = 10)	0 (95% CrI: 0%–0%)
ONNV Negative	61.3% (N = 486)	70.3 % (95% CrI: 66.0%–74.7%)	0% (N = 0)	100% (95% CrI: 100%–100%)
Equivocal	10.1% (N = 80)	—	38.7% (N = 24)	—