PPT-Group B Streptococci

A Newborns Greatest Threat Tracy Bumsted MD MPH Scanning electron micrograph shows a human neutrophil binding to and phagocytosing group B streptococci that have been opsonized with a monoclonal antibody and complement. Dr. Tamer . Bedair. Lecturer of Medical Microbiology and Immunology. Contents: . Character of Streptococci. Classification of Streptococci. Strept. . . pyogenes. a. virulence factors and pathogenesis. Cocci. . Streptococci. . By . Lec. . Dr. . Thanaa. . Rasheed. . Abdulrahman. 6. th. lect. bacteriology. Streptococci of medical importance are listed in Table 1. Species. Lancefield Group. Corynebacteria. . Streptococci. Cocci. :. spherical. Morphology:. Gram positive, . cocci. in chains . Characteristics of Streptococci. Morphology>> . Gram positive, . cocci. Arranged in chains, and some spp. arranged in pairs. Cocci. . Streptococci. . By . Lec. . Dr. . Thanaa. . Rasheed. . Abdulrahman. 6. th. lect. bacteriology. Streptococci of medical importance are listed in Table 1. Species. Lancefield Group. Associate . Professor Microbiology. Department of Pathology. Introduction. One of the two main human pathogens.. Gram positive . cocci. .. Oval shaped.. Arranged in chains and pairs.. Catalase negative.. . Streptococci. Cocci. :. spherical. Morphology:. Gram positive, . cocci. in chains . Characteristics of Streptococci. Morphology>> . Gram positive, . cocci. Arranged in chains, and some spp. arranged in pairs. Vandana. . gupta. Medical Microbiology. SemVI. The Streptococci. The streptococci are large and . heterogenous. group of Gram positive spherical bacteria that characteristically form pairs or chains during growth.. cocci. . Practical . No. 9. GENERAL CHARACTERISTIC:. * . G+ve cocci . , arrange in chains or pairs.. * Some strains are capsulated. * Majority are facultative anaerobic, few are obligatory anaerobic.. Senior Demonstrator, . Microbiology,KEMU. , Lahore. Streptococci. Characters of Streptococci. Gram positive . cocci. 1µm in diameter. Chains or pairs. Usually capsulated. Non motile. CapnophiliC. Non spore forming. Zainab. Abdul . jabar. . Aldhaher. Streptococcus. is a . genus. of . spherical. . Gram-positive. . bacteria. belonging to the . phylum. . Firmicutes. ]. and the . lactic acid bacteria. group. . . Greek-. streptus. =flexible: . coccus. = sphere spherical or ovoid cells, occurring in short or long chins, pairs, not in groups. Capsules are not regularly . formid. but develop in some species. . Streptococci. . By . Lec. . Dr. . Thanaa. . Rasheed. . Abdulrahman. 6. th. lect. bacteriology. Streptococci of medical importance are listed in Table 1. Species. Lancefield Group. Typical Hemolysis. . Hazim. . abdul. . Wahhab. General characters of streptococci. :. Spherical . (cocci) arranged in chain . or pairs. .. Gram- positive.. Most . streptococci are facultative anaerobes.. All . Streptococci are catalase negative.. . 6. Gram-positive . cocci. Streptococcus. By:. Asst. Prof. . Dr. . Shaima’a. Al-. Salihy. . Streptococci. Important properties:. Large group of bacteria belonging to the family . Streptococcaceae.