Table 1.

Overview of the studies included in the review.

Countries	Sub-Saharan Africa region	Number of studies	Percentage (%)
Tanzania (11), Ethiopia (3), Madagascar (2), Kenya (3), Uganda (2), Mozambique (1), Réunion (1) and Zambia (1)	Eastern Africa	24	32.0
Cameroon (1) and Democratic Republic of the Congo (1)	Middle Africa	2	2.7
South Africa (14), Namibia (1) and Eswatini (1)	Southern Africa	16	21.3
Nigeria (25), Senegal (4), Burkina Faso (1), Côte d’Ivoire (2) and Ghana (1)	Western Africa	33	44.0
	Total	75	100.0