Fig. 2From: Use of WhatsApp®, for distance teaching during COVID-19 pandemic: Experience and perception from a sub-Saharan African settingMonthly expenditure of internet connection in students’ (panel A) and lecturers’ (panel B) population before and after implementation of internet-based lectures using WhatsApp®. Cumulative numbers of participants are expressed in the y-axis for each study group. The proportion of individuals for each expenditure level are expressed as percentagesBack to article page