6 links of infection
Stages of infection
Incubation
from time of infection until manifestation of symptoms, can infect others
Prodromal
appearance of vague symptoms
not all diseases have this stage
Illness
signs and symptoms present
Decline
number of pathogens decline
Convalescence
tissue repair, return to health
Local infection
occurs in a limited region in the body
systemic
spread via blood or lymph
affects many regions
acute infections
rapid onset of short duration
Chronic infection
slow development, long duration
Latent
infection present with no discernible symptoms
Infection
when microorganisms capable of producing disease invade the body