Page 7 of 9 72. C. difficil e can superinfeet the colon when the normal microbio
ID: 217820 • Letter: P
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Page 7 of 9 72. C. difficil e can superinfeet the colon when the normal microbiota has been disrupted. T or 73. Fecal Microbiota iota Transplantation is a procedure in which feces from a healthy donor are transferred is a or colonoscopy directly to the colon of patients suffering C. difficile infection. T or F or hundreds of years, diphtheria was a significant cause of morbidity and mortality. Since many FACT] F pulations 74. Most cases of C. diphtheria oecur in nonimmunized children from 10-15 years of age. T or F 7 bor a reservoir of healthy carriers, the potential for diphthería is constantly present 5. Diphtherotoxin and Toxemia: Although infection is necessary for disease, the basic determinant of pathogenicity is the production of diphtherotoxin. Which of the following is INCORRECr b) toxigenic strains of C. diphtheriae carry the structural gene for toxin production c the structural gene for toxin production is acquired from bacteriophages is produced by toxigenic strains of C. diphtheriae d) all of the above are correct e) none of the above is correct 76, The genus Mycobacterium contains mycolic acids. This high lipid content imparts the characteristic of acid-fastness. T or F FACTIMycobacterium tuberculosis: Factors that affect a person's susceptibility to tuberculosis are poor nutrition, a weak immune system, poor access to medical care, lung damage, and genetics 77, Estimates project that about 20% to 30% of infected people actually develop a clinical case of tuberculosis. T or F 78. Regarding pertussis, which of the following is INCORRECT? a) pertussis is known as whooping cough c) infants have the highest incidence rate and accounting for the majority of deaths. due primarily to a vaccination campaign in the U.S., cases have dropped significantly e) all of the above are correct CHAPTER 20 79. What virulence factor is common to all Gram-negative bacilli? a) Capsule b) Exotoxin Endotoxin DNase e) Hemolysin 80. What genus of organisms is important as decomposers and bioremediators? a) b) Brucella c) Francisella d) Bordetella 81.What is/are the chief reservoirs) for Francisella tularensis? a) domestic animals b) ticks and biting flies c) humans and other large primates d) rabbits and rodents e) soil [FACT] A Michigan health official has been sentenced to a year's probation for not telling the public about an outbreak of Legionnaires' disease during the Flint water contamination scandal. Nearly 100 people fell ill [morbidity] during the outbreak and twelve people died [mortality 82. How are Legionella species transmitted from their natural habitats to humans? dust c) contaminated food contaminated drinking water e) by vectorsExplanation / Answer
Ans 72) C.difficle can superinfect the colon when the normal microbiota has been disrupted – True.
This mostly occurs in those whose normal microbiota has been disrupted due to an antibiotic treatment. As the intestinal flora is suppressed it let the microbe to colonize the colon and leads to production of the glycosylating toxin.
Ans 73) True
The fecal microbiota transplantation is the process of administration of fecal matter solution from donor inside the intestinal tract of a recipient and it helps in changing the microbial composition in the gut. It is used for treating Clostridium Difficile infection.
Ans 73) True
Children who are in the age range of around 10 to 15 years are more prone to diphtheria infection and it particularly and mostly occurs in non-immunized children.
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