Three to 5 days after eating Thanksgiving dinner at a restaurant, 112 people developed fever and gastroenteritis. All the food had been consumed except for five “doggie” bags. Bacterial analysis of the mixed contents of the bags (containing roast turkey, giblet gravy, and mashed potatoes) showed the same bacterium that was isolated from the patients. The gravy had been prepared from giblets of 43 turkeys that had been refrigerated for 3 days prior to preparation. The uncooked giblets were ground in a blender and added to a thickened hot stock mixture. The gravy was not reboiled and was stored at room temperature throughout Thanksgiving Day. What was the source of the illness? What was the most likely etiologic agent? Was this an infection or an intoxication?
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Microbiology: An Introduction (13th Edition)
- A 3-year-old severely ill child was admitted to a hospital withsymptoms of diarrhea, fever, and malaise. Laboratory testing showedabnormal renal and liver values and anemia. She had no history ofprevious illness, and her food history was a recent meal of teriyakibeef consumed at a local restaurant.a. What was the probable pathogen?b. What was the likely source?c. What is the pathologic effect of the pathogen?arrow_forwardWhy does Helicobacter pylori cause ulceractions in the lining of the Stomach? 1)The microbes secrete a toxin that prevents the host from detecting invasion of the microbe and thus allows it to thrive in the stomach and damage the host cells. 2)After invasion of the microbe in the cells lining the stomach, they are no longer able to produce mucous to protect the host cells from acid erosion 3)The microbe produces an enzyme that causes the cell to produce potent digestive enzymes that erode the stomach lining. 4)Once the microbe has entered the stomach, it releases digestive enzymes that degrade the mucous secreting cells.arrow_forwardThere have been many cases of human infection with Salmonella caused by contact (or ingestion) with raw or undercooked chicken. This is an example of which type of microbial source for foodborne illness? which option is the answer: 1. Contamination by human microbiota or pathogens during handling & preparation 2. A food animal – infection or colonization during its lifetime 3. Contamination by human or animal feces during growing, harvesting, washing, transport, or storage 4. None of the other four answers are correct 5. Contamination by naturally occurring environmental organisms from soil or other sourcesarrow_forward
- On October 29, Barbara participated in a study group for her Microbiology class. On November 1, Barbara had a "scratchy throat" when she swallowed. On November 2, Barbara had a headache, runny nose, and watery eyes. She was fully recovered on November 7. Identify the incubation period for this infection. Oct. 29-Nov. 1 Nov. 1 Nov. 2 Nov. 2-7arrow_forwardWhat genus was the organism that spread through the NIH hospital in bethesda, maryland? pneumoniae stenotrophomonas staphylococcus klebsiellaarrow_forwardGram positive case on the first day back to class at the local university, a student noticed a small abscess on his right elbow but didn't think much about it. Over the next couple days, however the abscess became more swollen and painful. The student decided to visit the health centet he told the doctor it looked like a spider bite but didn't recall being bitten. The doctor took a swab of the lesion and prescribed an antibiotic cream as it looked infected. The swab was sent to the lab for testing within a few days of treatment, the student lesion was healed. Answer questions: plate morphology: (example: SBR agar-small, translucent, round colonies showing beta hemolysis) gram stain: catalase: caugulase: bactiracin: TSI:arrow_forward
- Gram positive case on the first day back to class at the local university, a student noticed a small abscess on his right elbow but didn't think much about it. Over the next couple days, however the abscess became more swollen and painful. The student decided to visit the health centet he told the doctor it looked like a spider bite but didn't recall being bitten. The doctor took a swab of the lesion and prescribed an antibiotic cream as it looked infected. The swab was sent to the lab for testing within a few days of treatment, the student lesion was healed. what is the overview of the etiological agent?( including basic characteristics of the organism, diseases it cause and use in industry) Broad to get a sense of what this organism isarrow_forwardGram positive case on the first day back to class at the local university, a student noticed a small abscess on his right elbow but didn't think much about it. Over the next couple days, however the abscess became more swollen and painful. The student decided to visit the health centet he told the doctor it looked like a spider bite but didn't recall being bitten. The doctor took a swab of the lesion and prescribed an antibiotic cream as it looked infected. The swab was sent to the lab for testing within a few days of treatment, the student lesion was healed. answer the questions: plate morphology: gram stain: catalase: coagulase: bactracin: TSIarrow_forwardWhich of the following pathogens is the LEAST virulent? 1. Microbe B, ID50 = 1,000 cells 2. Microbe D, ID50 = 10 cells 3. None of the other four answers (Cannot be determined from information provided) 4. Microbe C, ID50 = 100 cells 5. Microbe A, ID50 = 100,000 cellsarrow_forward
- A 30 year old male patient who was a contractor and building inspector in the Greater Accra region complained of difficulty breathing and was admitted to the Greater Accra Regional hospital with severe respiratory disease. The Physician noted a high fever and cough. Two days before, the patient had inspected an old warehouse, abandoned and infested with rodents. The patient was given intravenous antibiotics, but 2 days into therapy the pneumonia worsened and he developed pulmonary edema. a) Which organism should be suspected of causing this illness?arrow_forwardPropionibacterium acnes is a normal member of the skin microbiome that benefits the body by lowering the skin's pH- an antimicrobial effect. However, P. acnes is also the leading cause of acne. Explain mechanistically how can a bacterium be normal and beneficial but also be pathogenic?arrow_forwardThe patient was a 44 year-old male with a past medical history significant for hypertension, non-insulin-dependent diabetes, high cholesterol, and heavy smoking (2 packs/day). He presented to the emergency room with complaints of chest pain and was found to have suffered a myocardial infarction (heart attack). A cardiac catheterization on hospital day 3 showed three arterial occlusions, and he underwent a triple-bypass on hospital day 5. On day 7, he developed septic shock with acute respiratory and renal failure, requiring intubation. He had a fever at that time of 39.3° C and two blood cultures were obtained. A chest x-ray showed left lung pleural effusion and a chest tube was inserted to drain the effusion. On day 11, pus was leaking from the sternal wound. Cultures derived from the wound and from the chest tube grew the organism noted in figures 1 and 2. A Kirby-Bauer disk diffusion assay is shown in figure 3. Figure 1: Organism under 1000x #LEHET A ALBUFE ALTHO 65 greets Figure 2:…arrow_forward
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