The disparity between knowledge in the First World as compared to the Third World is evident in healthcare and medical advancements. Deaths from water-related illnesses have largely been eliminated in "wealthier nations", while they are still a "major concern in the developing world". Widely treatable diseases in the developed countries of the First World, malaria and tuberculosis needlessly claim many lives in the developing countries of the Third World. 900,000 people die from malaria each year and combating malaria accounts for 40% of health spending in many African countries.