Some diseases progress so rapidly that they can cause severe complications or death within 24 hours if not treated immediately. These illnesses often involve organ failure, severe infections, or hemorrhaging, making them extremely dangerous. Here are seven diseases that can kill within a day: 1. Meningococcal Meningitis This bacterial infection affects the brain and spinal cord, leading to inflammation of the meninges. Symptoms include severe headache, fever, neck stiffness, and……➡️CONTINUE READING THE FULL ARTICLES HERE.