Cyclodevelopmental transmission

Cyclodevelopmental transmission

Insect borne filarial parasites are the only examples of this type of transmission. Microfilarial parasites ingested by the vector with the blood meal undergo development to 3 rd stage larvae (L3) before being transferred back to another vertebrate host. There is no replication and not all ingested microfilaria survive to L3. Thus, the number of parasites leaving the vector is always less than the number entering.

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  • Cyclopropagative transmission — protozoan parasites undergo both development and reproduction within the vector. These parasites both increase in number and transform to a different life stage before transmission can occurs. However, the vertebrate stages of these parasites can …   Wikipedia

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