Detection of pneumococci in blood cultures by latex agglutination.
نویسندگان
چکیده
Latex agglutination by use of the Pneumoslide test on clinical blood cultures detected 22 Streptococcus pneumoniae strains as the etiological agents in 47 streptococcal septic episodes. The other 25 isolates were identified as viridans streptococci or streptococci of groups A, B, D, or G. The test demonstrated 100% sensitivity, 92% specificity, and predictive values for positive and negative reactions of 91 and 92%, respectively. Two false-positive reactions were caused by strains of viridans streptococci. The two strains continued to give positive reactions when colonies from blood agar plates were tested according to the instructions of the manufacturer. This latex agglutination test is an effective tool for the rapid diagnosis of pneumococci in blood cultures.
منابع مشابه
ارزشیابی روشهای تشخیص سریع
In this study, counter immunoelectrophoresis (CIE) and latex agglutination (LA) were employed to evaluate rapid detection of streptococcus group B (GBS) specific antigens in sera, urines, CSF and patient's blood cultures of infants suspected of septicemia and meningitidis. Out of 530 specimens which were investigated 73 blood cultures were found to be positive, including 4 (5.5%) specimens from...
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BACKGROUND The aim of this study was to evaluate diagnostic tests in order to introduce a diagnostic strategy to identify the most common gram-positive bacteria (pneumococci, enterococci, β-haemolytic streptococci and S. aureus) found in blood cultures within 6 hours after signalling growth. METHODS The tube coagulase test was optimized and several latex agglutination tests were compared and ...
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متن کامل
Assessment of rapid methods of pneumococcal antigen detection in routine sputum bacteriology.
Sputum specimens from 480 patients were examined for the presence of pneumococci by Gram film and culture and for pneumococcal antigen by counterimmunoelectrophoresis, coagglutination, and latex agglutination. Ninety six positive specimens were detected. Gram film and culture provided the most reliable techniques in well taken specimens collected early in the illness before antibiotic treatment...
متن کاملAssessment of rapid methods of pneumococcal antigen detection in routine sputum
Sputum specimens from 480 patients were examined for the presence of pneumococci by Gram film and culture and for pneumococcal antigen by counterimmunoelectrophoresis, coagglutination, and latex agglutination. Ninety six positive specimens were detected. Gram film and culture provided the most reliable techniques in well taken specimens collected early in the illness before antibiotic treatment...
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ورودعنوان ژورنال:
- Journal of clinical microbiology
دوره 19 5 شماره
صفحات -
تاریخ انتشار 1984