reduction in the prevalence and incidence of malaria was seen in large populace of northern and central Europe‚ and North America. This was associated with improvement in Agricultural land use and housing. At the latter end of the 19th century‚ the plasmodium parasite‚ its vector
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THE SEARCH FOR BETTER HEALTH 1.What is a healthy organism? Discuss the difficulties in defining the terms ‘health’ and ‘disease’ * Health – state of physical‚ mental and social wellbeing. It is not just absence of disease * disease – any condition which effects the functioning of any part of a living organism * difficulties in defining health and disease; * health 1) the definition of health varies with age eg stiffness in the joints is probably more common in a 90yo
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MALARIA Malaria is a mosquito-borne infectious disease of humans and other animals caused by protists (a type of microorganism) of the genus Plasmodium. It begins with a bite from an infected female mosquito‚ which introduces the protists via its saliva into the circulatory system‚ and ultimately to the liver where they mature and reproduce. The disease causes symptoms that typically include fever and headache‚ which in severe cases can progress to coma or death. Malaria is widespread in tropical
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tropical Africa alone more than 1 million children under the age of fourteen die each year from Malaria. From these figures it is easy to see that eradication of this disease is of the utmost importance. The disease is caused by one of four species of Plasmodium These four are P. falciparium‚ P .malariae‚ P .vivax and P .ovale. Malaria does not only effect humans‚ but can also infect a variety of hosts ranging from reptiles to monkeys. It is therefore necessary to look at all the aspects in order to assess
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Choose the one best response to questions as follow: • The miracidial hatching test helps to demonstrate the viability of: B • eggs of Taenia species. • eggs of Schistosoma species. • eggs of hookworm species. • eggs of Opisthorchis. • After India ink injection‚ the gravid proglottids of which cestode contain seven to thirteen branches on each side? B • Taenia saginata • Taenia solium • Diphyllobothrium latum • Dipylidium caninum • A parasitic infection that may be diagnosed by the examination
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Malaria (also called biduoterian fever‚ blackwater fever‚ falciparum malaria‚ plasmodium‚ Quartan malaria‚ and tertian malaria) is one of the most infectious and most common diseases in the world. This serious‚ sometimes-fatal disease is caused by a parasite that is carried by a certain species of mosquito called the Anopheles. It claims more lives every year than any other transmissible disease except tuberculosis. Every year‚ five hundred million adults and children (around nine percent of the
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Protozoa are single-celled eukaryotes organisms whose cells have nuclei that normally show characteristics associated with animals‚ most common mobility and heterotrophy. They are often grouped in the kingdom Protista together with the plant-like algae and fungus-like water molds and slime molds. Most algae are classified in the kingdoms Plantae and Chromista‚ and some the remaining forms may be classified as a kingdom Protozoa. The name is misleading‚ since they are not animals. Protozoa have traditionally
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children living in Africa where a child dies every minute from malaria.1 Malaria is caused by Plasmodium parasites. The parasites are spread to people through the bites of infected Anopheles mosquitoes‚ called "malaria vectors"‚ which bite mainly between dusk and dawn. There are four parasite species that cause malaria in humans: Plasmodium falciparum Plasmodium vivax Plasmodium malariae Plasmodium ovale. Approximately half of the world ’s population is at risk of malaria. Most malaria cases
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Kingdom Protista: Characteristics Mostly unicellular‚ eukaryotic cells Reproduce asexually or sexually by conjugation Exhibit all three modes of nutrition Photosynthesis Ingestion Absorption Ultimately spawned all multicellular kingdoms Very diverse kingdom Difficult for taxonomists to agree on classification Diverse Modes of Nutrition Use diverse modes of nutrition Ingest
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