for which sample type would an isolation streak plate be most beneficial ? option - 1. blood 2. urine . 3. cerebral spinal fluid 3. sputum ( please explain in 200 word in own word )
Answers
Explanation:
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Microbiology laboratories commonly receive cerebrospinal fluid (CSF) or blood specimens from patients with meningitis, pneumonia, or unexplained febrile illness. Laboratories may also receive joint fluid, pleural fluid, or other sterile site specimens from these patients. Presumptive identification of N. meningitidis, S. pneumoniae, and H. influenzae can be made on the basis of a cytological examination of the CSF, specific colony morphology on blood and/or chocolate agar, staining properties on a Gram stain, or by detection of specific antigens in the CSF by a latex agglutination test or using a rapid diagnostic test (RDT). Methods for confirmatory identification of N. meningitidis, S. pneumoniae, and H. influenzae are presented in the next chapters of this laboratory manual
Personnel who are at risk of routine exposure to aerosolized N. meningitidis should strongly consider vaccination. Additional health and safety information can be found in Biosafety. While laboratory-acquired infections with S. pneumoniae or H. influenzae are not as extensively reported, fatal infections with these bacteria can occur, and vaccination against these organisms may be recommended in some laboratories.
Because the primary purpose of this manual is to aid in the identification of N. meningitidis, S. pneumoniae, and H. influenzae from clinical specimens collected from suspected cases of bacterial meningitis, the methods described here will not allow for identification of other isolates that may be of clinical importance but are less likely encountered. Microbiologists should refer to clinical microbiology manuals, such as the American Society for Microbiology’s Manual of Clinical Microbiology, for procedures to identify other bacteria.