Table 2.

Number and list of studies by continent and country.

Continent	Country	Number of studies	Studies
Africa		24
	Burkina Faso	2	[50, 51]
	Ethiopia	9	[13, 20, 52–55]; [21] (three communities)
	Kenya	3	[56–58]
	Lesotho	1	[59]
	Madagascar	2	[60, 61]
	Mozambique	1	[62]
	Niger	3	[8, 15, 63]
	South Africa	1	[64]
	Tanzania	2	[65, 66]
America		25
	Brazil	16	[9, 10, 12, 17, 22, 67–77]
	Dominica	1	[78]
	Mexico	5	[18, 79]; [80] (three communities)
	Peru	2	[23, 81]
	Venezuela	1	[82]
Asia		10
	India	2	[83, 84]
	Indonesia	1	[27]
	Manus Island	1	[85]
	Pakistan	2	[86, 87]
	Palestine	1	[88]
	Philippines	1	[19]
	Thailand	2	[89, 90]
Europe		6
	Austria	1	[14]
	Czech Republic	1	[91]
	Italy	1	[92]
	Serbia	2	[93, 94]
	Spain	1	[28]