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Department of Microbiology and Parasitology, SSMU
Any organism that spends a portion or all of its life intimately associated with another living organism of a different species is known as symbiont 共生者, and the relationship is designated as symbiosis.
Commensalism共栖现象denotes an association that is beneficial to one partner and the neither benefited nor damaged to the other.
Mutualism互利共生 is seen when such associations are beneficial to both organisms.
Parasitism寄生现象is a symbiotic relationship in which one animal, the host宿主, is to degree injured through the activities of the other, the parasite寄生虫.Parasite usually is the smaller of the two organisms.
The parasitic life cycle is the obligatory of parasites for their growth, development and multiplication that may be accomplished in their host (or hosts) or environment.
treatment and diagnosis) Stool
Urine Mouth Bronchial
(Epidemiology and Prophylaxis)
Stage left man
Stage in environment (vector)
patient, carrier and reservoir host
water, food, soil, air, insect vector and so on
People except those will special background are all susceptible to parasitic infection.
Infective name Pathogenesis
stage route Prevention
Life cycle Pathogenic name Pathogenesis
stage localization Treatment
Diagnostic stage-morphology Diagnosis
stage outside name Epidemiology
(vector, other host) name Prevention