A. Hook: what is next infectious disease coming?
B. Definition of the infectious disease. Infectious disease contains a particular type of the virus, so the virus advances into animal or human body and spread among animal and humans though the infection route. C. Thesis statement: Human beings are exposed to the threat of infection disease in around the world, so people should recognize that infection disease spread several different routes, especially via aerial, human, and mosquito biting.
II. Body Paragraph 1: aerial infection-the influenza virus
A. Topic sentence: People are infected an infectious disease by air-born rout.
B. Supporting details: familiar for example is influenza
III. Body Paragraph 2: animal and