Diphtheria is an infection caused by this bacterium: Corynebacterium diphtheriae. Symptoms can vary between sore throat and fever to more sever cases where a grey or white patch develops in one’s throat. It’s is usually spread between people by direct contact, through the air or by touching contaminated objects. In some cases, people might be carrying the bacteria without having symptoms, but can still spread the disease to others
Also known as Cave disease, is a caused by a fungus and affects primarily the lungs. If it spreads to other organs it’s refered as “disseminated histoplasmosis” and it can be fatal if left untreated. This disease might be common to patients with a suppressed immunity system. It is treated with antifungal medication.