Identification of
            <i>Streptococcus canis</i>
            Isolated from Milk of Dairy Cows with Subclinical Mastitis

Hassan, Abdulwahed Ahmed; Akineden, Ömer; Usleber, Ewald

doi:10.1128/jcm.43.3.1234-1238.2005

Cited by 38 publications

(70 citation statements)

References 29 publications

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“…The antibiotic susceptibility patterns of S. canis isolates found in our study are generally in agreement with the findings of other authors (Wu et al 1997;Kataja et al 1998;Hassan et al 2005;Moyaert et al 2006). In addition, our rates of resistance to erythromycin and tetracycline are much lower than those reported by Wu et al (1997), who found 38.2% of strains resistant to erythromycin and 73.5% of strains resistant to tetracycline.…”

Section: Resultssupporting

confidence: 83%

“…On the other hand, Efstratiou et al (1994) described only 40% of strains as esculin positive and all positive reactions were reported as delayed, which might be responsible for some of the discrepancy. According to Hassan et al (2005) all S. canis isolates appeared to be esculin negative on primary culture; whereas, the isolates were uniformly positive after they were subcultured. This could be another potential source of variation.…”

Section: Resultsmentioning

confidence: 99%

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Prevalence and Characteristics of Streptococcus canis Strains Isolated from Dogs and Cats

et al. 2007

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To determine the prevalence of Streptococcus canis in dogs and cats, a total of 926 swabs were examined bacteriologically in the period from 2003 to 2005. Eighty-six isolates obtained from various anatomical locations were further characterized for their phenotypic properties. The most frequently isolated biotype produced phosphatase, leucine amidopeptidase, arginine dihydrolase, alpha-D-and beta-D-galactosidase and fermented lactose and ribose. Additional identification by species-specific amplification of the 16S-23S rRNA intergenic spacer region was consistent with S. canis. All isolates were susceptible to penicillin G and ampicillin. The least effective antimicrobial agent was found to be tetracycline (only 33.8% of susceptible strains). Prevalence, S. canis, biochemical properties, 16S-23S rRNA intergenic spacer region

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Prevalence and Characteristics of Streptococcus canis Strains Isolated from Dogs and Cats

et al. 2007

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“…equisimilis by biochemical and molecular tests (23)(24)(25). The analysis of 16S and 23S rRNA sequences and that of other housekeeping genes also allows the distinction between these two taxa (17,23) and shows a close genetic relationship of both to another beta-hemolytic streptococcal species, namely, Streptococcus pyogenes (Lancefield group A streptococcus [GAS]) (26). In-ter-and intraspecies differentiation of S. canis isolates may also be achieved by using various typing methods.…”

mentioning

confidence: 99%

“…This species has also been implicated in fetal or neonatal septicemia, leading to abortion or neonatal death, respectively (2,11), and in both canine and feline necrotizing fasciitis and streptococcal toxic shock syndrome (13,14). S. canis may be transmitted between different animal species living in proximity (15) and has been responsible for outbreaks of clinical and subclinical mastitis with bacterial shedding in milk in cattle herds (16,17) and in pets living in shelters (14). However, little is known about the genetic diversity of S. canis, namely, if there are clones particularly adapted to the different animal species.…”

mentioning

confidence: 99%

Multilocus Sequence Analysis of Streptococcus canis Confirms the Zoonotic Origin of Human Infections and Reveals Genetic Exchange with Streptococcus dysgalactiae subsp.equisimilis

Pinho

Matos

Pomba³

et al. 2013

J Clin Microbiol

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dStreptococcus canis is an animal pathogen that occasionally causes human infections. Isolates recovered from infections of animals (n ‫؍‬ 78, recovered from 2000 to 2010 in three European countries, mainly from house pets) and humans (n ‫؍‬ 7, recovered from 2006 to 2010 in Portugal) were identified by phenotypic and genotypic methods and characterized by antimicrobial susceptibility testing, multilocus sequence typing (MLST), pulsed-field gel electrophoresis (PFGE), and emm typing. S. canis isolates presented considerable variability in biochemical profiles and 16S rRNA. Resistance to antimicrobial agents was low, with the most significant being tet(M)-and tet(O)-mediated tetracycline resistance. MLST analysis revealed a polyclonal structure of the S. canis population causing infections, where the same genetic lineages were found infecting house pets and humans and were disseminated in distinct geographic locations. Phylogenetic analysis indicated that S. canis was a divergent taxon of the sister species Streptococcus pyogenes and Streptococcus dysgalactiae subsp. equisimilis and found evidence of acquisition of genetic material by S. canis from S. dysgalactiae subsp. equisimilis. PFGE confirmed the MLST findings, further strengthening the similarity between animal and human isolates. The presence of emm-like genes was restricted to a few isolates and correlated with some MLST-based genetic lineages, but none of the human isolates could be emm typed. Our data show that S. canis isolates recovered from house pets and humans constitute a single population and demonstrate that isolates belonging to the main genetic lineages identified have the ability to infect the human host, providing strong evidence for the zoonotic nature of S. canis infection.

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“…It is therefore strongly suggestive that the streptococcal isolates in this study are most likely S. canis. The studies of Clark et al (1984), Skyes et al (2005), Lyskova et al 2007b andLamm et al (2010) Hassan et al 2007). The Streptococcal isolates from this study were from the vagina swabs.…”

Section: Discussionmentioning

confidence: 99%

Vaginal Carriage of Antimicrobial Resistant Lancefield Group G Streptococci among Dogs in Lagos Metropolis, Nigeria

Olufemi¹,

Okpara²,

Akinduti³

et al. 2017

AJVS

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Key words: Streptococcus canis; Lancefield Group G; apparently healthy bitches, Public Health risks Streptococcus species are common colonisers of urogenital tracts in dogs. While their involvement is becoming evident in clinical infections like foetal abortion and pathology of multiple organs in dogs, there is a paucity of information on the pathogenicity of the organism in apparently healthy dogs in Nigeria. In this study, 154 samples were obtained from 154 apparently healthy fertile and infertile bitches in Lagos State, Nigeria. Using the Lancefield classifications, 14 Streptococcal isolates were found to belong to the pathogenic Group G. Biochemical characterization was studied, Haemolysis on blood agar showed all isolates to be haemolytic Streptococcal canis and antimicrobial susceptibility testing revealed their susceptibility pattern. Eight (57.14%) of the isolates were from infertile bitches compared with 6 (42.86%) from fertile bitches. Regular contact of the dog owners with their vaginal discharge may constitute a potential source of higher risk of disease of streptococcal origin of public health importance.

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Identification of Streptococcus canis Isolated from Milk of Dairy Cows with Subclinical Mastitis

Cited by 38 publications

References 29 publications

Prevalence and Characteristics of Streptococcus canis Strains Isolated from Dogs and Cats

Prevalence and Characteristics of Streptococcus canis Strains Isolated from Dogs and Cats

Multilocus Sequence Analysis of Streptococcus canis Confirms the Zoonotic Origin of Human Infections and Reveals Genetic Exchange with Streptococcus dysgalactiae subsp.equisimilis

Vaginal Carriage of Antimicrobial Resistant Lancefield Group G Streptococci among Dogs in Lagos Metropolis, Nigeria

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