KENYAN students Purity Nduku and Blessing Cheroo, who go to a boarding school for blind and partially blind children near Nairobi, often walk holding hands. That way "you are sure you have the support and if something happens, your friend will help," Nduku says. Visually impaired pupils hold on to each other for confidence as they walk after attending a lesson, amid the spread of the coronavirus disease (COVID-19) at the Thika school for the blind in Thika town of Kiambu county in Kenya October 29, 2020. REUTERS/Monicah Mwangi However, this simple yet vital tool of holding hands makes it…