Answer:
incubation. The first stage of an infectious disease in which the microbe is present but symptoms have not appeared is called the incubation period. During this period, the microbe is multiplying and colonizing the host but the host has not yet developed symptoms.
prodromal is the stage of an infectious disease when early symptoms appear, before the full-blown illness.
chronic is a stage of a disease that persist over a long period of time, usually many months or years.
convalescent is the stage of an infectious disease when the patient is recovering from an illness, and the body is repairing itself.
resolution is the stage of an infectious disease where the symptoms disappear and the host has recovered.