PRESENTED BY SAIMOUN INTRODUCTION Parasite A living organism which receives nourishment and shelter from another organism where it lives Classes of parasites a Ectoparasite ID: 1030780
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1. BRIEF INTRODUCTION OF CARRIER AND VECTORSPRESENTED BY SAIMOUN
2. INTRODUCTION Parasite :- A living organism which receives nourishment and shelter from another organism where it lives . Classes of parasites :- a. Ecto-parasite :Lives outside on the surface of the body of the host. b. Endo-parasite :-Lives inside the body of the host :in blood ,tissues,body cavities,digestive tract and other organs .
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4. c. Temporary parasite :-visits its host for a short period .d. Permanent parasite :- Leads a parasitic life throughout the whole periods of its life.e.Facultative parasite :-Lives a parasitic life when opportunity arises.f. Obligatory parasite :- Cannot exist without a parasitic life .g. Occasional or accidental parasite :- Attack on unusual host .
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6. HostAn organism which harbours the parasite
7. CARRIERIndividual that is infected by a disease agent capable to disseminating but no sign of disease.Carrier has no symptoms of disease but still passes it on to someone else.It is three main types :-True carrier :- Capable of disseminating the infection agent but never exhibit clinical sign of disease.Incubatory carrier :-Disease in incubatory stage .Convalescent carrier :- Clinical sign disappear.
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10. VECTORA vector is an organism who passes on a disease without getting sick.Actively transmits an infectious agent between infected and susceptible vertebrate.They can serve as a vehicle where by infectious agent is conveyed from one host to another without undergoing the stage of multiplication.
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