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background and aims. in the presence of certain systemic diseases, oral microflora may aggravate the condition of the disease. microbial population in the oral cavity especially with heart disease can increase the risk of bacterial endocarditis. the aim of this study was to evaluate the rate of oral streptococcus mutans and the rate of caries in children suffering from heart disease. materials ...

alpha toxin derived from clostridium perfringens was used for diagnosis of streptococcus agalactiae (st.agalactiae) by rapid and spot camp tests. the selected cl.perfringens strain was cultured in optimized conditions; the supernatant of culture was concentrated by ultra filter and purified by deae cellulose chromatography. the efficacy of both purified and crude α-toxins were examined by rapid...

streptococcus agalactiae is a major contagious pathogen causing bovine sub-clinical mastitis. the present investigation was carried out to determine some phenotypic characteristics of the s. agalactiae strains isolated from bovine mastitis cases in dairy cows of shahrekord in the west-center of iran. one hundred eighty california mastitis test (cmt) positive milk samples were bacteriologically ...

streptococcus iniae has emerged as an important fish pathogen over the last decade in farmed rainbow trout in iran. the main objective of this study was to evaluate the pathogenicity of s. iniae in poecilia reticulata . atotal of 60 apparently healthy p. reticulata were obtained from ornamental fish pet store and injected intraperitoneally with 1.5×10 6 cfu of bacteria. for 14 days after challe...

Certain factors of climate are favorable to streptococcus respiratory diseases. In those tropical environments where hemolytic streptococcus is unusual in the throat flora, scarlet fever is unknown and rheumatic fever rare. In New York City, however, following epidemic waves of pharyngitis with hemolytic streptococcus the incidence of rheumatic fever rises precipitously. The correlation between...

Splenic abscesses caused by Streptococcus bovis are rarely reported in the literature and are mainly seen in patients with endocarditis and associated colonic neoplasia/carcinoma. We report the first case of splenic abscess caused by Streptococcus gallolyticus subsp. pasteurianus (Streptococcus bovis biotype II/2) as presentation of a pancreatic cancer.

Four macrolide-lincosamide-streptogramin B resistance plasmids transferred into 13 recipients belonging to Streptococcus, Staphylococcus, and Listeria genera. The plasmids were stably maintained in all new hosts except Streptococcus sanguis, Streptococcus pneumoniae, Staphylococcus aureus, and Listeria innocua and were identical to those found in the corresponding donor strains.

Strep throat can be a real pain in the neck, err, throat, and the streptococcus bacteria is to blame. Streptococcus has hundreds of different strains that are organized into group A and group B. Group A strep (GAS), or streptococcus pyogenes, causes strep throat, as well as scarlet fever [2] and impetigo [3]. Group B strep (GBS), or streptococcus agalactiae, causes blood infections, pneumonia, ...

The associations of Streptococcus intermedius, S. constellatus, and S. anginosus (the three species of the S. milleri group) with clinical infections and sites of isolation were investigated by using a simple biochemical scheme to identify a collection of 153 clinical isolates. S. intermedius was associated with abscesses of the brain and liver, while both S. anginosus and S. constellatus were ...