2005,Pathologic examinationThe country's 31 provinces (autonomous regions and municipalities), helminth infections 356 629
26 kinds of human worm infection, worm infection rate of 21.74%
Types of hosts
1 Definitive host (终宿主):
Those provide the living of adult helminth or sexual stage of a protozoan.
2 Intermediate host (中间宿主) :
Those provide living of larvae of helminth or asexual stages of a protozoan.
2. Effects of Host on Parasite ---- immunity
A.Defensive physiological reaction • Barrier function of skin and g effect B.The immune response
Premunition (malaria), 3. Concomitant immunity (schistosoma)
4. 3. Re-infection occurs often
The impact of parasites on human health
The “TDR” for control of the 10 kinds of major tropical diseases, in addition to leprosy, tuberculosis and dengue fever, the rest are parasites, they are: