This is hard, there are so many diseases that cause so much death and serious illness/disability. However, malaria and tuberculosis are two diseases that affect millions of people. Figures from the world health organisation (WHO) Malaria: 214 million cases with 438 000 deaths in 2015. Tuberculosis: 10.4 million cases with 1.4 million deaths in 2015. I would like to find a cure for tuberculosis as the bacteria is becoming resistant to the current drugs that are used.