Listeria monocytogenes Essays

complete taxonomic hierarchy of Listeria monocytogenes is: Bacteria (Domain), Eubacteria (Kingdom), Firmicutes (Phylum), Bacilli (Class), Bacillales (Order), Listeriaceae (Family), Listeria (Genus), and Listeria monocytogenes (Species). L. monocytogenes is a gram-positive, rod-shaped bacteria. The rods of L. monocytogenes are often arranged into short chains, and in direct smears can appear coccoid and be mistaken for steptococci. Longer cells of L. monocytogenes can ressemble corynebacteria. L

Listeria monocytogenes is an important food-borne pathogen and is widely tested for in food, environmental and clinical samples. Given the close morphological and biochemical resemblances of L. monocytogenes to other Listeria species, and the non-specific clinical manifestations of listeriosis, the availability of rapid, specific and sensitive diagnostic tests capable of distinguishing L. monocytogenes from other (Liu, 2006). In the food industry, standard culture procedures are used as reference

The recent outbreak of food poisoning in South Africa that led to several deaths is Listeria(listeriosis). Listeriosis is an infection that is caused by consuming food contaminated by the bacteria Listeria. The infection can cause serious illness in pregnant women, neonates, adults with weakened or compromised immune systems and the elderly, and is capable of causing gastroenteritis in others who have been severely infected. Most people infected show no symptoms, but the elderly and very young are

of ready-to-eat meat contaminated with Listeria monocytogenes represents a considerable public health concern. The ability to persist in food-processing environments and multiply under refrigeration temperatures makes L. monocytogenes a serious threat to public health. L. monocytogenes contamination is one of the leading microbiological causes of food recalls. Ready-to-eat (RTE) cooked meat and meat products are frequently contaminated with L. monocytogenes during post-processing operations and handling

Listeria Bacteria found in the Listeria genus are Gram-positive, flagellated, rod shaped bacteria found in several places. For instance, water, soil, and animals like cattle. The Listeria genus has the special and uncommon ability to survive and grow in severe environments, including freezing temperatures. The optimum temperature for Listeria to grow is 30 degrees to 37 degrees Celsius. (Holt, Krieg, Sneath, Staley, & Williams, 1994) These non-spore forming bacteria are also facultative anaerobes

2.6.1 Global epidemiology of Listeria monocytogens The illness Listeriosis is an advancing infection of major public health significance worldwide due to the occurrence of its foodborne outbreaks and significant risk of mortality and morbidity. According to Weinstein and Bronze (2015), the overall mortality rate of L monocytogenes infection is 20-30%. Human listeriosis is mainly acquired through ingestion of contaminated food; Other modes of transmission include the transmission of the infection

Detection of listeria spp Contamination of food and dairy products with Listeria is the major cause of foodborne disease in human. Since researchers have found out that listeria is a foodborne pathogen, there is a continuous challenge on isolation of bacteria from food and other samples [115]. The primary studies indicated that Listeria is able to grow at low temperature so researchers used this phenomenon for isolation of bacteria from clinical samples by culturing for a long time in 4oC but this

Blue Bell Creameries over listeria contamination issues. According to Entrepreneur.com and Wall Street Journal, three deaths were associated with the outbreak. Government authorities are trying to investigate the causes of such outbreak. In April, Blue Bell voluntarily subjected itself for investigation. On the same month, death cases in association with ice cream 's listeria were reported. Blue Bell Creameries closed down operations in April in Brenham, Texas over listeria contamination issues. The

circulans, Bacillus coagulans, Bacillus megaterium, Bacillus subtilis, Bacillus thuringiensis, Brevibacillus brevis, Geobacillus stereothermophilus, Lysinibacillus sphaericus, Clostridium perfringens, Corynebacterium pseudodiphtheriticum, Listeria monocytogenes, Lactobacillus casei, Enterococcus faecalis (Streptococcus), Streptococcus lactis (Lactococcus), Streptococcus mutans, Streptococcus pneumonia, Micrococcus (Kocuria) roseus, Sarcina lutea (Micrococcus luteus), Sporosarcina ureae, Staphylococcus

listeriosis? Listeriosis is a foodborne infection caused by a motile, rod-shaped, gram-positive, and food-borne bacteria called listeria commonly found in contaminated food (D, 2004). It is most likely to infect people who have a compromised immune system, pregnant women, older people, newborn, birds, and animals and it can give rise to meningitis and encephalitis. Listeria monocytogene discussion It is a foodborne pathogen which can infect both humans and animals. Structurally it is rod-shaped and it falls

As a pet owner you have to supply your pet with a nutritionally balanced diet. Trying to figure out which dietary meal plan is best for your pet can be hard with so many commercial options on the market as well as many raw food diet regimens. Things to take into account when choosing an appropriate diet for your canine include: metabolic needs, growth stage, and activity level. During this essay I am going to analyze dry commercial dog food diets versus raw homemade and commercial diets. Using observation

Meningitis Meningitis is a deadly disease. Meningitis is the disease where the protective membrane surrounding the brain and spinal cord has an inflammation. Meningitis is caused by a viral or bacterial infection. Meningitis can be quite painful to suffer through, although the treatment is not that complex, the affected human suffers a variety of the following symptoms: headache, nausea, vomiting, seizures, sleepiness or diffuclty waking up, no appetite or thirst, rash of purple discolouration fever

foodborne illness, resulting in 128,000 hospitalization and 3000 deaths. Eight known pathogens account for the vast majority of those estimates. Those pathogens are Norovirus, Salmonella, Campylobacter, Clostridium perfringens, Escherichia coli, Listeria monocytogens, Staphylococcus aureus, Toxoplasma gondi. Norovirus is every contagious virus. You ca get the virus through an infected person, contaminated food or water. The virus causes your stomach and intestine to get inflamed. This leads to stomach

Author, Eric Schlosser, in his nonfiction exposé, “Fast Food Nation”, reveals the sickening truth about the fast food industry. Schlosser’s purpose is to expose the secrets that the fast food industry hides. Schlosser utilizes a serious tone, shocking diction, and exact details to educate his audience on the fast food industry. Throughout his book, Schlosser adopts a serious tone to communicate the facts to his audience. He closes his introduction by displaying his concern for children, due to

2 Dimethyl sulfoxide(DMSO) Dimethyl sulfoxide(DMSO) was first introduced in 1963 by a research team headed by Stanley W Jacob at the university of Oregon Medical School. This drug has many useful medical applications [Spring 1995]. Scientists at Washinton University,School of medicine, St Louis and university of Arakansas Department of Dermatology, was looking for a topical agent that would produce anaesthesia for painful surgery. 70% DMSO was reported as a most effective agent. DMSO is a potent

protective membranous layer of the central nervous system) in the neonatal period. The most common causes of neonatal meningitis is bacterial infection of the blood: • Group B Streptococci (GBS; Streptococcus agalactiae) • Escherichia coli • Listeria monocytogenes. Regardless of the specific pathogen involved, neonatal meningitis is most often caused by vertical transmission during labor and delivery. It occurs few days following birth and is more common in premature infants than in term infants. 1

Background to the Discovery According to a study published in the journal Nature, there is a species of bacteria inside the human nose produces a substance capable of killing a range of bacteria, including the strain of drug-resistant Staphylococcus aureus known as methicillin-resistant S. aureus (MRSA). 30% of people carry Staphylococcus aureus in their nostrils. As a result, scientists of University of Tübingen in Germany identified a substance called lugdunin which is effective for killing off

Describe factors that affect the health of the fetus Introduction Complications that occur in pregnancy can affect both the mother and the child in negative ways. In this essay I am going to talk about complications that can occur during pregnancy and how the complications can affect both the mother and the child, I am also going to talk about both the symptoms and the treatments for conditions that can be caused due to complications in pregnancy. Complications in pregnancy There are lots

there is a critical need to better comprehend the PK and PD properties of fosfomycin keeping in mind the end goal to improve its utilization. In the event that this objective can be acknowledged fosfomycin may serve as a valuable treatment alternative for MDR contaminations, at any rate until more current operators get to be available.[31] 2.2.3 Chemistry and commercial formulations: Fosfomycin speaks to its own particular anti-infection class25 and is synthetically inconsequential to whatever

It is also stated some Exclusions and hygiene practice Some common types of food poisoning are succeeding Salmonella, Campylobacter, Cryptosporidium, Ecoli O157, Listeria Monocytogenes, Shigella - Bacillary Dysentery, Small Round Structured Virus. In Campylobacter, Symptoms include an overall feeling of disease, diarrhea, severe abdominal pain, high fever and sometimes vomiting. First symptoms can take up to 4 days from