Learn About The Developmental Cycle Of Parasites That Infect Humans

Parasitical Worms.com The development cycle consists of parasite modes that exist in the exterior and in the body of a host. This sequence of parasites takes place continuously over time and space
By mastering the parasite's development cycle, health workers will have a clear orientation to fight parasites and better gain knowledge of parasite pathology.
The position of the person in the developmental cycle of the parasite
The person is the only host of the parasite
Parasites spread from person to person. For example: Ascaris lumbricoides, Enterobius vermicularis, Entamoeba histolytica

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The development cycle of parasites has a human parasitic phase interspersed with an animal phase
Human parasites are transmitted to animals and from there back to human parasites For example: Taenia saginata, Taenia solium ..



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The development cycle of human parasites is a sub-stage, the main stage is in animals
The developmental cycle of parasites travels back and forth between animals
Double people come into contact with animals and contract parasites. For example: Hairy Balantidium Coli.
* Case of Balantidium Coli:
The parasite naturally travels between pigs. People who have contact with pigs can become infected with the parasite and pass it on to each other.
The development cycle of human parasites is dead end
The parasite naturally travels between animals People who come into contact with animals can get parasites in the form of larvae
True dead end:
In people with stagnant growth, the larvae will be destroyed
For example: Larva syndrome moves outside the skin due to hookworm and dog roundworm infection
Dead end plague:
In humans, the larvae do not develop but persist for a long time and in a situation of predation, the development cycle can be completed
For example, the case of Trichinella spiralis larvae in humans.
The development cycle of intestinal parasites
Intestinal parasites are an important group of parasites, spread through faeces in three types of cycles
The development cycle of direct parasites is short
The parasite when leaving the host is contagious immediately
For example: flagellate, amoeba, pinworm, pinworm ...



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The development cycle of the parasite is direct and long
Parasites after leaving the host, need some time outside to develop to the stage of infection. For example: Roundworm, hair worm, hookworm ..
The development cycle of indirect parasites
The parasite needs to pass one or two intermediate hosts before invading the host permanently.
Through an intermediate host: eg Taenia saginata
Through two intermediate hosts: most fluke cases. For example, large intestinal flukes.
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