The first paragraph should be completely removed. It sounds very amateurish. Almost as if you are applying to college rather than to an international masters scholarship program. That presentation is not only confusing to read, but also little applicable to the discussion requirements as outlined by the prompts.
cause of over 62% of deaths globally, with developing countries
Focus on the effects within your country alone. Your aim is to improve public health services in your country, not the world. Focus on what is truly important and where the learned information will be applied. Discuss the data as it affects the health of your national or local population.
I gained knowledge in courses transferable to this programme. As well as carried out a research
Mention the specific programs you studied as is applies to both coursers. Discuss your research as if it were to be considered as a part of your future thesis. A continuing research program based on your previous results would be of note to the reviewer if you can explain why it is important to continue your research.
The suggested changes will require you to revise the other paragraphs as well so that you will not exceed the maximum word count. Please note that you should review your essay, in this case, for potential irrelevant discussions or exceeding explanations or examples of your learnings and skills. Be precise with information where needed. Avoid any general references since the reviewer needs specific information to consider in relation to your CV expanded explanations.