Some potentially pathogenic bacteria and fungi, including strains of Enterococcus, Staphylococcus, Candida, and Aspergillus, can survive for one to three months on a variety of materials found in hospitals, including scrub suits, lab coats, plastic aprons, and computer keyboards. What can hospital personnel do to reduce the spread of these pathogens?
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- 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?Note that it is not appropriate to self-diagnose outside of a medical context and this is a completely hypothetical scenario. Imagine you have a rash on your foot. You're concerned that it's an infection and inoculate a sample onto an agar plate. You wonder, How can I figure out whether the pathogen is a bacterium vs a eukaryote? You decide to use lab supplies to get a basic understanding of the pathogen. Be specific about what tests you use and what you expect the results to be. Limit yourself to experiments we could do in our lab. What is one experiment you could do, involving culturing the organism?Note that it is not appropriate to self-diagnose outside of a medical context and this is a completely hypothetical scenario. Imagine you have a rash on your foot. You're concerned that it's an infection and inoculate a sample onto an agar plate. You wonder, How can I figure out whether the pathogen is a bacterium vs a eukaryote? You decide to use lab supplies to get a basic understanding of the pathogen. Be specific about what tests you use and what you expect the results to be. Limit yourself to experiments we could do in our lab. What is a procedure you could do, involving making a slide of the organism?
- About becterial enzymes, it is CORRECT to affirm that: a). Some becterial enzymes can help the microbe fight the immune system, by destroying lgA.b). Coagulases are enzymes that use the host's fibrinogen and form a semi-solid get that isolates amd protects the bacteria.c). Some bacterial enzymes such as hyaluronidase can help the microble move through the host's tissus by destroying the tissue's components.d). Fibrolysin is an enzymes that can help from blood clots.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.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?
- This pathogen is usuall foodborne and causes a mostly asymptomic disease. The most common foods associated with it are deli meats and unpasteurized dairy products. It rarely cause meningitis and spsis. It is mainly of concern because it can lead to still birth. This pathogen is a) Stahylococcus aureus b) Streptococci pneumoniae c) Listeria monocytogens d) Streptocpccus pyogenes)What methods are similar in bringing fungal and bacterial specimens from a particular body site?Note that these questions are not about what happens to the specimens in the lab. It is about taking specimens from the human body. 2)What are some methods that might be more suitable for bringing fungal pathogens to the lab? 3)What methods might be more suitable for bacteria?All bacteria produce spores. a) Trueb) False
- Which of the following is true regarding pathogenic strains of Staphylococcus and Streptococcus, respectively? A) O Staphylococcus aureus is a common cause of sore throats. B) O Alpha-hemolytic Streptococci turn blood agar green and include members that cause pneumonia and tooth decay, C) Gamma-hemolytic Streptococci completely lyse red blood cells on blood agar. D) O The beta-hemolytic group of Streptococci does not contain any pathogenic types.Name two methods of control of growth for Mycobacterium tuberculosis pathogen in a patient with the disease and when confronted with the pathogen outside of the host. Be careful to specify if it is a physical method or a chemical method (check lecture to differentiate these two). Control of growth means how would you deal with an infection related to a person as well as how would you minimize the presence of the bacteria on a surface or object.Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most dangerous organisms that can be encountered in the health care setting. MRSA is often resistant to more than one antibiotic. 1. What does it mean to say that S. aureus is resistant to methicillin? 2. What antibiotic would you choose to combat this micro-organism? 3. What are some clinical consequences for the patient infected with MRSA? Edit View Insert Format Tools Table В І 12pt Paragraph UA T² V fil <