.through direct contact with fresh water infested with the free-living form of the parasite known as cercariae.Eggs are excreted in human urine and feces and, in areas with poor sanitation, contaminate freshwater sources.
Schistosomiasis.is.caused by the larvae of one or more of five types of flatworms or blood flukes known as schistosomes. Theodor Bilharz, a German pathologist.identified the worms in 1851.
The most common species of schistosomes that infect humans are Schistosoma mansoni, Schistosoma haematobium, and Schistosoma japonicum. Each of these species is associated with distinct geographical regions and transmission patterns.
species of schistosomes . S. intercalatum is found in central Africa.
It's contracted.
Schistosomes are unique among trematodes due to their dioecious reproductive system, meaning they have distinct male and female individuals, whereas most trematodes are hermaphroditic. They also have a complex life cycle that includes specific freshwater snail hosts for their larval stages, which is less common in other trematodes. Additionally, schistosomes are known for causing significant human diseases, such as schistosomiasis, making their public health impact more pronounced compared to other trematodes. Their elongated body shape and specialized structures for attachment and movement further differentiate them from other trematodes.
species of schistosomes . Schistosoma mansoni is widespread in Africa, the Eastern-Mediterranean, the Caribbean, and South America and can only infect humans and rodents.
The contracted form of 'does not' is 'doesn't'.
The contracted form of MUST NOT is MUSTN'T.
HIV will not be contracted if not exposed to the virus; in addition if it has no entry point or has insufficient quantity of the virus, it will not be contracted.
Malaria is usually contracted from an infected mosquito
No words are contracted into apostrophes.
The contracted form of “do not” is “don’t.”