By Joke Kujenya SWEAT DRIPPED from Kunle Adetola’s brow as he gripped the sides of the sink, his stomach twisting in agonising knots. The night had become a relentless cycle of sprinting to the toilet, his body betraying him with violent spasms of nausea and diarrhoea. Kunle Adetola, a 22-year-old university student in Southwest Nigeria...