A student argues that it makes no sense to be concerned about coliforms in drinking water because they are harmless members of our normal microbiota. Explain why regulatory agencies are concerned about coliforms
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A student argues that it makes no sense to be concerned about coliforms in drinking water because they are harmless members of our normal microbiota. Explain why regulatory agencies are concerned about coliforms.
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- While it is true that not all coliforms are pathogenic under normal conditions, please name two situations that can occur due to infection by pathogenic strains.A patient in ICU with an indwelling medical device is presenting with invasive infection symptoms, specifically fever and chills. They have been on a course of antibiotics that has not alleviated the condition. a) What type of organism do you suspect is causing the infection and why?Identifying an unknown bacterium is an essential step in the diagnosis and treatment process. Since not every antibiotic is effective against every type of bacteria, knowing what caused a particular infection allows us to make correct prescriptions so patients can recover more quickly. Knowing the cause of an infection also prevents antibiotic resistance as well, since incorrect prescriptions allow bacteria to be unnecessarily be exposed to antibiotics, increasing the chances of developing resistance.
- When a food handler doesn't wash their hands after using the bathroom and introduces noravirus (cause of vomiting and diarrhea) into the food, what is the best term for the food in the chain of infection when the customers get sick? Question 6 options: a) reservoir b) vector c) carrier d) vehiclePlease reply to the post below whether or not you agree or disagree and why A common microbe found in foods and can be taken orally are probiotics. Probiotics are live bacteria that balance good and bad intestinal bacteria and aid in digestion or digestive problems. For example, Lactobacillus species habituate where rich carbohydrate substances are available including the human digestive and urinary tracts. In 1900 lactobacillus acidophilus was isolated by Moro from infant feces and the intestinal tract of animals and humans. Also, it was reported in the feces of milk fed infants and older persons consuming high milk/lactose diets. This microbe is also found in plant materials and agricultural products particularly milk, cheese, fermented milk products and beverages such as wine and cider. Historically, Lactobacillus species is most often known to be capable of eliciting beneficial effects on the microbiota of the gastrointestinal tract. It helps the body break down food, absorb…Why 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.
- While it is true that not all coliforms are pathogenic under normal conditions, please name two situations that can occur due to infection by coliforms under abnormal conditions (when they are present where they are not supposed to be or when their numbers exceed acceptable levels)Propionibacterium 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?Propionibacterium 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 part of the normal microbiome and beneficial but also be pathogenic?
- _________________ is one of the precautionary methods that help in destroying any infections and acts as an infection control policies. Question options: A) Infection control B) Hand Hygiene C) OSHAHere are four toxins: diphtheria toxin, cholera toxin, tetanus toxin, and exfoliative toxin. Choose two of them and answer the following questions: 1. Is it an exotoxin or an endotoxin? 2. Which bacterial species produces it? 3. Briefly describe its mode of action and how it causes damage to the host cells. Include specific signs and symptoms.Microbial pathogenicity relates to A) O how a microbe overcomes host defenses B) O how a microbe survives in a host C) Ovirulence factors D) O toxins that may be produced by a microbe E) O pathogenicity relates to all of the above