Explanation: A researcher of diseases is a medical scientist who engages in conducting research to improve over all well being of human health.
There are various types and kinds of diseases a researcher or scientist conducts. Such researches include but not limited to infectioue diseases, rare diseases clinical research, neurodegenerative disease research, tropical diseases research, cancer research center and a host of others. There are also disease research and control centers all over the world where diseases researchers work. These researches provide insights and break throughs in tackling these diseases.
In the fourth episode, the Servant actually eagerly answers to Oedipus's questioning about his heritage - that he was abandoned by his parents and that he is that same baby he had been asking around about.
