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This organism causes meningitis and is transmitted mainly by the inhalation of dried, contaminated bird droppings. Infections are treated with amphotericin B and flucytosine.
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Ch. 22 - Microbial Diseases of the Nervous System
Tortora14th EditionMicrobiology: An IntroductionISBN: 9780138200398
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TOC.tableOfContents
- Ch. 1 - The Microbial World and You18
- Ch. 2 - Chemical Principles20
- Ch. 3 - Observing Microorganisms Through a Microscope18
- Ch. 7 - The Control of Microbial Growth20
- Ch. 9 - Biotechnology & DNA Technology20
- Ch. 10 - Classification of Microorganisms15
- Ch. 11 - The Prokaryotes: Domains Bacteria and Archaea14
- Ch. 12 - The Eukaryotes: Fungi, Algae, Protozoa, and Helminths17
- Ch. 13 - Viruses, Viroids, and Prions20
- Ch. 14 - Principles of Disease and Epidemiology21
- Ch. 15 - Microbial Mechanisms of Pathogenicity19
- Ch. 16 - Innate Immunity: Nonspecific Defenses of the Host20
- Ch. 17 - Adaptive Immunity: Specific Defenses of the Host20
- Ch. 18 - Practical Applications of Immunology20
- Ch. 19 - Disorders Associated with the Immune System19
- Ch. 20 - Antimicrobial Drugs19
- Ch. 21 - Microbial Diseases of the Skin and Eyes21
- Ch. 22 - Microbial Diseases of the Nervous System19
- Ch. 23 - Microbial Diseases of the Cardiovascular and Lymphatic Systems20
- Ch. 24 - Microbial Diseases of the Respiratory System20
- Ch. 25 - Microbial Diseases of the Digestive System20
- Ch. 26 - Microbial Diseases of the Urinary and Reproductive Systems19
- Ch. 27 - Environmental Microbiology20
- Ch. 28 - Applied and Industrial Microbiology19
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Tortora 14th EditionCh. 22 - Microbial Diseases of the Nervous SystemProblema 10
Tortora 14th EditionCh. 22 - Microbial Diseases of the Nervous SystemProblema 10Capitolo 18, Problema 10
Use the following choices to answer the question given below:
a. Cryptococcus
b. Haemophilus
c. Listeria
d. Naegleria
e. Neisseria
Microscopic examination of cerebrospinal fluid from a person who washes windows on a building in a large city reveals ovoid cells.
Guida verificata passo dopo passo1
Step 1: Identify the key features described in the problem. The cerebrospinal fluid (CSF) contains ovoid cells observed under microscopic examination.
Step 2: Recall the characteristics of each organism listed in the choices, focusing on their morphology and typical clinical presentations involving the central nervous system (CNS).
Step 3: Consider the shape 'ovoid cells' and which organisms among the options are known to appear as ovoid cells in CSF. For example, Cryptococcus is a yeast that appears as ovoid cells with a capsule.
Step 4: Evaluate the environmental and epidemiological context. The patient is a window washer in a large city, which may influence exposure risk to certain pathogens.
Step 5: Use the process of elimination by matching the morphology and clinical context to the most likely organism from the list, focusing on those that cause meningitis or CNS infections and appear as ovoid cells microscopically.
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Microscopic Morphology of Microorganisms
Microscopic morphology refers to the shape, size, and structural features of microorganisms observed under a microscope. Identifying ovoid (egg-shaped) cells helps narrow down the type of pathogen, as different microbes have characteristic shapes such as cocci, bacilli, or ovoid forms. This is crucial for preliminary diagnosis and guiding further testing.
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Common Causes of Meningitis and Their Characteristics
Cerebrospinal fluid (CSF) analysis is key in diagnosing meningitis, an infection of the membranes around the brain and spinal cord. Common bacterial and fungal pathogens like Neisseria, Haemophilus, Listeria, and Cryptococcus have distinct features and patient risk profiles. Recognizing these helps correlate clinical presentation with likely causative agents.
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Environmental Exposure and Pathogen Source
Understanding a patient's environmental exposure, such as washing windows in a city, can hint at possible pathogens encountered. For example, Naegleria, a free-living amoeba found in warm freshwater, causes rare but severe brain infections. Linking exposure history with pathogen ecology aids in accurate diagnosis.
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03:271) Exposure to Pathogen
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Outline the procedures for treating rabies after exposure. Outline the procedures for preventing rabies prior to exposure. What is the reason for the differences in the procedures?
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Provide evidence that Creutzfeldt-Jakob disease is caused by a transmissible agent.
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Use the following choices to answer the question given below:
a. Cryptococcus
b. Haemophilus
c. Listeria
d. Naegleria
e. Neisseria
Microscopic examination of cerebrospinal fluid reveals gram-positive rods.
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