How rains turn deadly in northern Nigeria As the rainy season comes to Zamfara, MSF is responding to worsening diseases, food insecurity, and more. Leila Rafei May 27 2026, 10:32am Between May and September each year, daily survival becomes a struggle as flooding, outbreaks of infectious diseases, and worsening food insecurity converge. For communities already affected by years of insecurity, the consequences are devastating.