Salmonella is a group of bacteria that cause typhoid fever, food poisoning, gastroenteritis, enteric fever and other illnesses. People become infected mostly through contaminated water or foods, especially meat, poultry and eggs. Salmonella is a gram-negative, rod-shaped bacilli that can cause diarrheal illness in humans. Put simply, Salmonella is a bacterium shaped like a rod with a cell wall composed of peptidoglycan. There are many different kinds of these bacteria. Salmonella serotype Typhimurium
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CS#13 You work in a small family practice in rural Virginia, (much better than Texas!). A man in his early 50s comes in with a complaint of intermittent fever (102-103 F) and headache for the past two weeks. The physician examines him and takes a history. The only clinical finding is a wound about the size of a quarter on his right thumb. Axillary lymph nodes are swollen and tender. The man says he cut himself while skinning a rabbit three days ago. On the basis of these observations the
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best diagnosis of this case? From my research on the signs and symptoms that this patient presented I would diagnose her with Lyme’s disease. 2. What features are critical to your diagnosis? Lyme’s disease is a bacterial infection caused by bacteria called Borrelia Burgdorferi. This is a bacterium that is carried by ticks. The patient has all of the signs and symptoms of this disease. Prior to the onset of symptoms she was in the wilderness in Wisconsin where she said there were a large number
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The most common causes of diarrhea are viral infections, or bacterial infections.(Campylobacter, Salmonella, Shigella, and Escherichia coli (E. coli). . Some other causes are hepatitis, caffine, blood pressure medications and cancer medications. Bacteria are everywhere from the foods you eat to the screen on your phone, the most common food-related causes of diarrhea are from food that was not refrigerated well enough or has gone bad before it was eaten. Other causes of the disorder are irritable
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strain of Streptococcus pneumoniae was exposed to a heat-killed pathogenic strain of the same bacteria. Griffith observed that although the virulent strain had been heat-killed; the DNA was able to survive the heating process and was taken up by the “resistant” strain of bacteria through gene transformation. In this lab, an experiment was conducted to test the hypothesis that a susceptible strain of bacteria, known as the S-strain, will grow in the presence of an antibiotic if it is combined with the
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Human Biology Antibiotics Resistance Pathogens are organisms, such as a virus, fungus, or bacteria that cause a disease in another organism. Diseases range from the common cold to food poisoning to meningitis. They spread in various ways such as coming into contact with bodily fluids, being in contact with an infected, or ingestion. Bacteria are microorganisms too small to see that exist in any environment in the world. Viruses are microorganisms that can only reproduce through a host cell
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as well) = Obtain energy and nutrients from waste or dead organisms. Ex: Fungi and Bacteria Life maintains Internal Consistency (Homeostasis) * Homeostasis is the process by which a cell or organism maintains a state of internal consistency, or equilibrium. Reproduction in 2 ways * Asexual reproduction = genetic information that only comes from one parent and all offspring are identical Ex: Bacteria and most
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2014 Controlling bacterial growth: an analysis of the effect of disinfectants on bacteria 1. INTRODUCTION In order to control the spreading of sometimes harmful bacteria, many disinfectants, such as bleach and Lysol, has been created to help control bacterial growth and dispersement. Bacteria are a diverse group of unicellular organisms with the capability to rapidly grow and produce (Carroll 2014). Bacteria can be found nearly everywhere, even inside of our bodies. They serve many important
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first cholera pandemic occurred in the Bengal region of India starting in 1817 and lasting until 1824. Cholera is now epidemic in many countries. Cholera is a bacterial disease that infects the small intestine and causes diarrhea and dehydration. The bacteria was isolated in 1854 by Italian anatomist Filippo Pacini, but its exact nature and his results were not widely known. Spanish physician Jaume Ferran i Clua developed a cholera vaccine in 1885, the first vaccine to immunize humans against a bacterial
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Cidal agents – ALWAYS KILL * Sepsis and Asepsis * Indicates bacterial contamination * Translated to purid * Asepsis: free from significant contamination * Aseptic technique II. The Rate of Microbial Death: Bacteria usually die at a constant rate. * Death is constant = linear graph * Example is 90% per minute * First few die very quickly * Last few in population will be hard to kill * Very hard to get to zero microbes
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