Study area
The study was carried out in a rural setting in the Central-western part of Burkina Faso, at the department of Soaw, one of the five departments of the health district of Nanoro. The study site included the coverage area of the health centre of Soaw (village of Soaw and village of Rakalo) and the coverage area of the health and social promotion centre of Zoetgomdé (village of Zoetgomdé and village of Kalwaka). According to the health and demographic surveillance system (HDSS) of Nanoro, the population in 2020 was estimated at 7293 inhabitants for the village of Soaw, 2179 inhabitant for the village Rakalo, 931 inhabitants for the village of Zoetgomdé and 2262 inhabitants for the village of Kalwaka [