For a doctor, whether in public health or in private practice, the major enemy is disease and for centuries, physicians and scientists would always struggle to find ways and means on how to fight and eliminate diseases, especially those which are fatal to man and even animals and plants on which men depend for food. For a clinician, the objective is how one individual would not get sick or proceed to a more complicated case. For a public health officer, the objective is how to ensure that a community of many would not get sick (outbreak).
This will be the topic of my first lecture for the 3rd year medical students this second semester.
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