Table 1.

Haïti poliovirus environmental surveillance sites evaluated during March 2017–December 2019; site details, including estimated watershed populations. Port au Prince: BNF = Bois de Neuf, BDC = Bois de Chêne, MAC = Morne à Cabri, RRD = Route Rails Diquini, CAC = Cite au Cayes, CAR = Carrefour; Gonaïves: KHF = Key Soleil Health Facility, KSB = Key Soleil Bridge, ATP = Autorité Portuaire, ALL = Avenue Leon Legros, BRA = Boulevard de l’Avenir, KHS = Key Soleil School; Saint Marc: AMA = Avenue Maurepas, HUC = Impasse Hucar, and PET = Rue Petion; Cap Haïtien: CRC = Ruelle Caporis, RPA = Ruelle Patience, GRC = Grand Rue Champin, IMP = Impasse Petion, RNB = Route National Bridge, and CMB = Rivière Commerce Bridge.

City	Site Code	Total Sampling Events	Geographic Coordinates	Estimated Watershed Population	Additional Site Details
Port au Prince	BNF	34	18.5815, −72.3291	347,237 *	Downstream from CAC [17]
	BDC	34	18.5383, −72.3539	339,624 *	[17]
	MAC	1	18.6611, −72.1870	Unknown †	[17]
	RRD	33	18.5345, −72.3843	67,320	Open canal near intersection Rue du Dr Dehoux and Harry Truman Blvd
	CAC	4	18.5658, −72.3105	139,987	Upstream from BNF, open canal Saint George
	CAR	4	18.5500, −72.4166	9361	Open canal Rivière Froide on Route de Rails
Gonaïves	KHF	16	19.4534, −72.6900	20,749 *	[17]
	KSB	5	19.4575, −72.6960	82,123 *	[17]
	ATP	1	19.4483, −72.6963	Unknown †	[17]
	ALL	4	19.4422, −72.6845	10,034	Upstream from BRA, open canal near intersection of Ave Leon Legros and Ruelle Patience
	BRA	31	19.4383, −72.6896	20,241	Downstream from ALL, open canal near intersection Blvd de l’Avenir and Bas Mavignole
	KHS	4	19.4532, −72.6849	17,878	Upstream from KHF, open canal near intersection Avenue Roland 1 and Rue Polkos
Saint Marc	AMA	19	19.1059, −72.7022	50,744	Open canal at intersection Rivière Saint Marc and Avenue Maurepas ‡
	HUC	16	19.1224, −72.6978	5655	Open canal near intersection Impasse Hucar and Rue les Boutin
	PET	6	19.1102, −72.6984	49,372	Open canal at intersection Rivière Saint Marc and Rue Petion ‡
Cap Haïtien	CRC	21	19.7336, −72.2178	8810	Open canal along Ruelle Caporis, drains into Rivière du Haut du Cap
	RPA	21	19.7383, −72.1844	22,468	Open canal along Ruelle Patience
	GRC	3	19.7367, −72.2155	5455	Open canal along Grand Rue (Ruelle) Champin, drains into Rivière du Haut du Cap
	IMP	5	19.7405, −72.2088	9626	Open canal along footpath south of Impasse Petion, drains into Rivière du Haut du Cap
	RNB	5	19.7504, −72.2046	225,762	Site is Rivière du Haut du Cap under the Route National 3 bridge
	CMB	5	19.7336, −72.1772	21,580	Open canal adjacent to the Voix Evangélique d’Haïti (4VEH) radio transmission station

* Updated from previously published figures [17]; † unknown [17]; ‡ based on satellite imagery, there is no overlap between these two tributaries of the Rivière Saint Marc that flow through the city of Saint Marc [24].