Introduction about Salmonella Assignment Example | Topics and Well Written Essays - 1250 words

Introduction about Salmonella - engagement ExampleIn the early periods of the 19th century, typhoid was basically defined on the basis of its symptoms and clinical signs. Literally, every enteric febrility was categorized as typhoid. During 1880s, Eberth became the first someone to observe the typhoid boron in parts of the spleen as well as in the mesenteric lymph nodes from a person who had succumbed to typhoid (Todar, 2009). Robert Koch later confirmed Eberths discovery and cultivated the bacteria in 1881. In 1896, it was established that typhoid bacillus agglutinated the bacterial cells causing typhoid using the serum of animal blood. The same firmness of purpose replicated in patients suffering from typhoid and thus, serodiagnosis of typhoid became a possibility in 1896 (Todar, 2009). Proper development of exculpate genome ensures effective classification of disease-causing organisms (pathogens) and their armys. The classification of the genus salmonella has undergone con siderable changes over many years as the methods of identification methods hold the line improving with time (Liu, 2011). In 1946, Kaufmann White developed a scheme that enabled distinguishing of Salmonella serovars based on their O, H as well as Vi antigens (Todar, 2009). According to Warrell et al. (2005), the genome of Salmonella enterica serovar Typhi (S. ... The impacts of Salmonella enterica serovarTyphi range from health to economic devastations. When an individual consumes contaminate water, the symptoms of typhoid fever are likely to manifest after a short while. Typhoid fever is usually connected with systemic fever, loss of appetite, nausea or vomiting, which is usually followed with diarrhea. If left untreated for a very long period of time, the disease could cause death in humans. Salmonella enterica serovar Typhi is most prevalent in developing nation where poor sanitation leads to contamination of water for drinking. As such Salmonella enterica serovarTyphi is one o f the contributors to high gear health spending in different parts of the world. According to Crump, Luby and Mintz (2004), typhoid fever is a consequence worldwide and causes about 16 million illnesses and more than 600, 000 fatalities every year. Introduction Closest Relatives of Salmonella Enterica Serovar Typhi and Their Features There is no clear understanding of the genetic basis of the distinctions in host tropism that exist between serovars and wide host range. The genetic changes that come with evolutionary changes in the serovars include the build-up of mobile components and pseudogenes together with the arrangement of chromosomes and deletion that causes the diminution in the genome (Porwollik, 2011). One close relative of Salmonella enterica serovar Typhi is Salmonella enterica serovar Typhimurium. According to Todar (2009), Salmonella enterica serovar Typhimurium is a Gram-negative facultative rod-shaped bacterium in the same proteobacterial family as Escherichia col i, the family Enterobacteriaceae, trivially known as enteric bacteria (Todar,