The Pathogen Five major species of Schistosoma affect humans: s. mansonis haematobium. s japonicum, S intercalatum, and S. mekongi Other Schistosoma species that occasionally infect humans include s. bovis.s. mattheei and some avian schistosomes
The Pathogen Five major species of Schistosoma affect humans: S. mansoni, S. haematobium, S. japonicum, S. intercalatum, and S. mekongi. Other Schistosoma species that occasionally infect humans include S. bovis, S. mattheei, and some avian schistosomes
The Pathogen These species differ biologically from one another and in their geographic distribution and the type of disease that they produce The schistosomes are digenetic parasitic trematodes. Although they are morphologically distinct, the species of Schistosoma that infect humans share some common factors
7 The Pathogen These species differ biologically from one another and in their geographic distribution and the type of disease that they produce. The schistosomes are digenetic parasitic trematodes.Although they are morphologically distinct, the species of Schistosoma that infect humans share some common factors
The Pathogen The large male(0.6 to 2.2cm×2to4mm) has a ventral gynecophoric canal in which the female (1.2 to2.6cm×1to2 mm)is held during copulation
8 The Pathogen The large male (0.6 to 2.2 cm × 2 to 4 mm) has a ventral gynecophoric canal in which the female (1.2 to 2.6 cm × 1 to 2 mm) is held during copulation
EPIDEMIOLOGY Schistosomiasis occurs mainly in rural agricultural and periurban areas. Infection with S. mansoni is found in parts of South America Africa and the middle east Infection with S japonicum is found in the Far east mostly China and the philippines In China, 0.67%of the population may be infected, according to cdc statistical report at 2008
9 EPIDEMIOLOGY Schistosomiasis occurs mainly in rural agricultural and periurban areas. Infection with S. mansoni is found in parts of South America, Africa, and the Middle East. Infection with S. japonicum is found in the Far East, mostly China and the Philippines. In China, 0.67% of the population may be infected, according to CDC statistical report at 2008.
EPIDEMIOLOGY Infection sources Mode of transmission Susceptible population
10 EPIDEMIOLOGY Infection sources Mode of transmission Susceptible population