Final answer:
The prodromal period is the stage of disease where general signs and symptoms begin to appear, which are typically nonspecific and can include malaise and mild fever.
Step-by-step explanation:
The period referred to in the question is the prodromal period. This stage occurs after the incubation period and marks the onset of disease in the patient. During the prodromal period, the individual begins to experience the first signs and symptoms of illness, which are often nonspecific and can include malaise, mild fever, fatigue, and a general feeling of unwellness. This stage can be a critical time for the spread of infectious diseases since the individual may not be aware of the significance of the mild symptoms and consequently may not take measures to prevent transmission to others.