Table 1: LAMP and PCR primer sets.

Geo-political zones	States	States that Lassa fever was isolated in 2022 (as of March 19)	States that Lassa fever was isolated in 2021	States that Lassa fever was isolated in 2020	States that Lassa fever was isolated in 2019	States that Lassa fever was isolated in 2018	States that Lassa fever was isolated between December 2016 to 02 December 2017
North-East	Bauchi	+	+	+	+	+	+
	Adamawa	+		+	+	+
	Borno			+			+
	Gombe	+		+	+	+	+
	Taraba	+	+	+	+	+	+
	Yobe
North Central	Nasarawa	+	+	+	+	+	+
	Plateau	+	+	+	+	+	+
	Kogi	+	+	+	+	+	+
	Benue	+	+	+	+	+
	Kwara				+		+
	Niger	+
North West	Kebbi	+		+	+
	Sokoto			+
	Kastina	+		+
	Kano	+		+		+	+
	Zamfara				+
	Kaduna	+	+	+	+	+	+
	Jigawa
South-West	Lagos			+	+	+	+
	Oyo	+		+	+
	Osun			+		+
	Ogun			+			+
	Ondo	+	+	+	+	+	+
	Ekiti					+
South-South	Edo	+	+	+	+	+	+
	Delta	+	+	+	+	+
	Bayelsa
	Rivers	+		+	+	+	+
	Akwa-Ibom
	Cross Rivers	+	+		+		+
South-East	Ebonyi	+	+	+	+	+	+
	Imo		+		+	+
	Abia		+	+	+	+
	Anambra	+	+	+		+	+
	Enugu	+	+	+	+	+	+
Federal Capital Territory	Abuja	+	+	+		+
	Total	23	17	27	23	23	19

Source: Adapted from NCDC [55].