HIV is a viral illness that can be transmitted sexually, by transfusion, shared needles and during child birth from mother to child. Due to its long latent period, there is a danger of its spread without action. It affects the human body by targeting T-cells, that are responsible for protection from uncommon infections and cancers. It is managed by life prolonging drugs known as Antiretroviral drugs (ARVs). TB was discovered by Robert Koch in 1882. It is characterised by fever, weight loss, poor appetite and night sweats. Throughout the years, there has been an improvement in mortality and morbidity caused by TB. This improvement has been attributed to the introduction of the TB vaccine in 1906. Despite this, each year the majority infected by TB are the poor. Finally, Malaria used to be prevalent throughout the world. It is now limited to developing and warm regions; Africa, Asia and South America.