African sleeping sickness or African trypanosomiasis is a disease endemic to Africa. It is caused by a flagellated protozoan, Trypanosomabrucei , and transmitted by the bite of its biological vector, the tsetse fly on human skin. The pathogenesis includes the multiplication of the T.brucei on the site where tsetse fly has attackedthe skin. After multiplying in number, these parasites enter the blood as well as lymphatic circulation and express different antigenic variations after each multiplication cycle. Due to the recurrent parasitic cycle and antibody production, subsequent involvement of the central nervous system occurs. Eventually, drooping of eyelids and sleepiness occur and cause fatality under extreme conditions.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 26, Problem 9MC

Summary Introduction

Introduction:

African sleeping sickness or African trypanosomiasis is a disease endemic to Africa. It is caused by a flagellated protozoan, Trypanosomabrucei, and transmitted by the bite of its biological vector, the tsetse fly on human skin. The pathogenesis includes the multiplication of the T.brucei on the site where tsetse fly has attackedthe skin.

After multiplying in number, these parasites enter the blood as well as lymphatic circulation and express different antigenic variations after each multiplication cycle. Due to the recurrent parasitic cycle and antibody production, subsequent involvement of the central nervous system occurs. Eventually, drooping of eyelids and sleepiness occur and cause fatality under extreme conditions.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 26, Problem 9MC

Summary Introduction

Introduction:

African sleeping sickness or African trypanosomiasis is a disease endemic to Africa. It is caused by a flagellated protozoan, Trypanosomabrucei, and transmitted by the bite of its biological vector, the tsetse fly on human skin. The pathogenesis includes the multiplication of the T.brucei on the site where tsetse fly has attackedthe skin.

After multiplying in number, these parasites enter the blood as well as lymphatic circulation and express different antigenic variations after each multiplication cycle. Due to the recurrent parasitic cycle and antibody production, subsequent involvement of the central nervous system occurs. Eventually, drooping of eyelids and sleepiness occur and cause fatality under extreme conditions.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 26, Problem 9MC

Summary Introduction

Introduction:

African sleeping sickness or African trypanosomiasis is a disease endemic to Africa. It is caused by a flagellated protozoan, Trypanosomabrucei, and transmitted by the bite of its biological vector, the tsetse fly on human skin. The pathogenesis includes the multiplication of the T.brucei on the site where tsetse fly has attackedthe skin.

After multiplying in number, these parasites enter the blood as well as lymphatic circulation and express different antigenic variations after each multiplication cycle. Due to the recurrent parasitic cycle and antibody production, subsequent involvement of the central nervous system occurs. Eventually, drooping of eyelids and sleepiness occur and cause fatality under extreme conditions.

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Answer 4

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 26, Problem 9MC

Summary Introduction