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PubMedDate not supplied

[Update on the susceptibility of streptococci to antibiotics (enterococci and Streptococcus pneumoniae excluded)].

Over the last years, the emergence of resistance to antibiotics has complicated the management of streptococcal infections. The resistance of streptococci to antibiotics is increasing and seems to be linked to the consumption of antibiotics. Resistances to antibiotics have been noted in all species of streptococci and no family of antibiotics is unaffected by resistances. The incidence of resistance to antibiotics varies from one species to another and according to countries. Presently, even though no Streptococcus pyogenes has shown diminished susceptibility to betalactams, this phenomenon has been reported for some strains in the B, C, and G groups, and for up to 56 % of oral streptococci. As for the resistance to macrolides, it reaches as many as 41 % of Streptococcus pyogenes, 46 % of group B streptococci, and 63 % of oral streptococci responsible for severe infections. This evolution is worrying for all streptococci but particularly for oral streptococci which represent a potential reservoir of virulence genes, notably towards Streptococcus pneumoniae. New families of antibiotics as the ketolides or the oxazolidinones appear to be effective in the treatment of streptococcal infections, but it seems that only a policy of control of the consumption of antibiotics could globally decrease the occurrence of resistance.

Anti-Bacterial Agents↗
PubMed2003

[Streptococcus bovis endocarditis - predictor of colonic carcinoma? ].

The association of Streptococcus bovis endocarditis with colonic neoplasia is classically described and exceeds 50 percent. The prevalence of Streptococcus bovis in fecal cultures from patients with carcinoma of the colon is significantly increased (56%) as compared to that in controls (10%) and also in patients with inflammatory bowel disease (28%). Streptococcus bovis endocarditis is relatively benign, but it stresses the frequency of the associated colonic carcinoma, requiring colonoscopy and making the treatment of the high-risk lesion mandatory. The article covers a literature review and a case report.

Adenocarcinoma↗
PubMed2003

Streptococcus suis infection: clinical features and diagnostic pitfalls.

Eight cases of Streptococcus suis (S. suis) infection between 1993-1999 were retrospectively studied. There were 6 cases of meningitis and 2 cases of endocarditis. Acute meningitis with early sensorineural hearing loss was the characteristic feature and the most common presentation of S. suis infection. S. suis endocarditis is a rare presentation in Thailand. This organism was often mistaken for Streptococcus pneumoniae or Streptococcus viridans. In this study, this was true in five cases in whom S. suis was identified later. However, the rapid diagnosis of S. suis meningitis may rely on Gram stain of the CSF in the setting of acute meningitis with hearing loss. These cases were treated with intravenous penicillin or ampicillin with a mean duration of 4 weeks. This treatment was very effective and there was no relapse among these patients.

Adult↗
PubMedDate not supplied

[Streptococcus suis infection, a zoonosis we should have in mind--2 case reports].

Streptococcus suis is primarily pig's pathogen, but can cause disease in a man exposed to contact with pigs (butchers, abatoir workers, farmers). Infection in man is most frequently manifested as purulent meningitis, with deafness and ataxia, but there are rare reports on septic shock with multiple organ failure and death. We report two patients with Streptococcus suis type 1 infection, treated in "Dr Josip Bencević" General Hospital, Slavonski Brod. The first patient suffered a very abrupt and severe illness, with septic shock, multiple organ failure and lethal outcome. The second patient had purulent meningitis with deafness. Both of them had a defect in immunologic function before infection. They were probably infected during manipulation with pork meat at home. Our patients had infection with Streptococcus suis type 1, contrary to reports on prevalent human infection with type 2. It is necessary to make epidemiologic survey on human infection with that pathogen, especially in those professionally exposed to pigs and pork meat.

Adult↗
PubMed2003

[The study on specific anti-Streptococcus mutans IgY against dental caries in rats].

OBJECTIVE: To investigate the effect of specific anti-streptococcus mutans IgY against streptococcus mutans on dental caries development in rats. METHODS: 35 wistar rats were divided into 5 groups: group A received IgY gargle; group B received IgY lyophilized powder; group C received sterilized water as control; group D and E received egg yolk food with or without specific IgY individually. They were all fed with caries-inducing diet 2000#. The number of caries scores was counted by the procedure of Keyes'. RESULTS: There was a significant lower mean of caries scores in groups treated with IgY lyophilized powder and gargle. By treating with egg-yolk food contained specific IgY, the mean of caries scores decreased comparing with no treatment group. CONCLUSION: Local passive immunization with specific anti-streptococcus mutans IgY may be an effective way to prevent the development of dental caries.

Animals↗
PubMed2004

[Prevalence of Streptococcus algalactiae serotype III in pregnant women].

BACKGROUND: Group B streptococcus, or Streptococcus agalactiae, is a grampositive coccus related to infections in the mother and the newborn during peri and postnatal period. OBJECTIVE: To describe the prevalence of S. agalactiae serotype III and the susceptibility to antimicrobials in strains isolated from pregnant women. MATERIAL AND METHODS: Cultures from vagina, rectum, and urine were taken from 123 high risk pregnant women, who attended to a Gynecology and obstetrics hospital from June 1st to August 30, 2000. Samples were cultured on 5% sheep blood agar and selective broth. For comparison purposes, we also studied 25 S. agalactiae strains from non-pregnant women isolated from January 2000 to August 2001. Serotyping was performed by latex agglutination and susceptibility testing by Kirby Bauer method. RESULTS: The prevalence of S. agalactiae carriers in pregnant women was 13% and the serotypes were: I (58.8%), II (29.4%), III (5.9%) and non typeable (5.9%). Serotypes from non-pregnant women were: I (68%), II (4%), and III (28%). In both groups, the intermediate resistance to penicillin was 17.6 and 12%, whereas for ceftriaxione was 17.6 and 20% respectively. Resistance to both clindamycin and erythromycin was lower than 4%. CONCLUSIONS: The prevalence of S. agalactiae in pregnant women was low and similar to other studies reported in Mexico. Serotype I was the most frequently isolated. Resistance to clindamycin and erythromycin was low, whereas intermediate resistance to penicillin and ceftriaxone was high. The low prevalence of both Streptococcus agalactiae and associated infections in Mexico could be related to racial factors or immunity due to early exposure to that bacterium.

Adolescent↗
PubMed2005

Spinal epidural abscess caused by group B Streptococcus in a diabetic woman presenting with febrile low back pain.

Because spinal epidural abscess is usually ignored in the preliminary differential diagnosis of low back pain, appropriate treatment may be delayed. Adult spinal epidural abscess is sparsely caused by the pathogen known as group B Streptococcus. In this paper, we report the case of a diabetic woman with lumbar epidural abscess and vertebral osteomyelitis caused by group B Streptococcus. Owing to the main manifestations of fever, pyuria and low back pain, which originally led us to suspect acute pyelonephritis, empirical antibiotics were applied. When the symptoms and signs persisted, other focal infections were considered. Magnetic resonance imaging led to the correct diagnosis. Group B Streptococcus was isolated from the blood but not from the abscess itself, probably due to the prior antibiotic treatment. The patient recovered well after surgical debridement followed by prolonged intravenous penicillin therapy. Therefore, despite the potential for fatality, our results suggest that epidural abscess can be successfully treated with surgery and antibiotic therapy provided that it is detected early enough.

Anti-Bacterial Agents↗
PubMed2005

[Study on the horizontal transmission of oral Streptococcus mutans in children].

OBJECTIVE: To find out horizontal transmission of oral Streptococcus mutas (S. mutans) in nursery children through analyzing the similarity of S. mutans genotypes. METHODS: The study group included 24 nursery children between 3 and 4 years of age. Dental plaque samples were collected with sterile toothpick and cultured on MSB plates for 48 h. Individual Streptococcus mutans group colonies representative of the colonial morphologies were subcultured on TPY plates. These strains were identified to species level biochemically. AP-PCR fingerprinting was preformed after identification. S. mutans isolates from different children with very similar fingerprinting profiles were examined by chromosomal DNA fingerprinting analysis. RESULTS: Streptococcus mutans group were isolated in oral cavities of 66.7% children, 58.3% in caries-free and 75.0% in caries children. A total of 4' S. mutans isolates from 24 subjects were analyzed by AP-PCR, and 29 different amplitypes were identifyied, 45.8% carried tw. genotypes. There were 2 genotypes of S. mutans isolated repeatedly among 12 nursery children. CONCLUSION: The presence of matching genotypes of S. mutans among nursery children suggests horizontal transmission.

Child, Preschool↗
PubMed2005

Revocation of status of specific products; Group A streptococcus. Direct final rule.

The Food and Drug Administration (FDA) is removing the regulation applicable to the status of specific products; Group A streptococcus. FDA is removing the regulation because the existing requirement for Group A streptococcus organisms and derivatives is both obsolete and a perceived impediment to the development of Group A streptococcus vaccines. The regulation was written to apply to a group of products that are no longer on the market. We are taking this action as part of our continuing effort to reduce the burden of unnecessary regulations on industry and to revise outdated regulations without diminishing public health protection. We are issuing the removal directly as a final rule because it is noncontroversial, and there is little likelihood that we will receive any significant adverse comments. Elsewhere in this issue of the Federal Register, we are publishing a companion proposed rule under our usual procedures for notice and comment in the event that we receive any significant adverse comments on the direct final rule. If we receive any significant adverse comments that warrant terminating the direct final rule, we will consider such comments on the proposed rule in developing the final rule.

Antigens, Bacterial↗
PubMed2005

[Anlysis on features of dead cases with human Streptococcus suis infections].

OBJECTIVE: To describe the clinical and epidemiological features of dead cases with human Streptococcus suis infections, and to find the target population for preventing death and the related indicators. METHODS: Epidemiological investigation on human Streptococcus suis infections was implemented used unified questionnaires. Analysis on dead cases and survival cases (as contrast) was done. RESULTS: The population with highest fatality rate was in 40-49 age group. 97.37% of dead cases had toxic shock syndrome. The mean interval from onset to admission was 0.76 days, and the mean course was 2.11 days. The progression among dead cases was faster than that among survival cases. Chief clinical manifestations of dead cases that are more frequent than survival cases are purpura (73.68%), diarrhea (50.0%), dyspnea (21.05%), conjunctival congestion (34.21%), etc. Renal impairment and liver involvement in dead cases were more significant than that in survival cases. No significant difference between mean incubation period, exposure rates of main risk factors in dead cases and in survival cases was found. CONCLUSION: Preventing toxic shock syndrome might reduce the fatality rate. The target population for preventing death is aged > or = 40. Liver function and renal function testing might be indicators for monitoring the progression of human Streptococcus suis infections.

Adult↗
PubMed2006

[High prevalence of group B Streptococcus colonization in Mexican pregnant women].

OBJECTIVE: To determine the prevalence of group B Streptococcus (GBS) colonization in two anatomical sites in Mexican women of childbearing age, as well as the associated risk factors. PATIENTS AND METHOD: A retrospective cohort analysis was made with two groups of women between 14 and 44 years old. We formed two groups of 72 women; one had a recent positive group B Streptococcus culture and the other, paired by age and culture date, had a negative culture of the same bacterium. All of them answered a validated questionnaire and two rectal swabs were obtained and cultured for isolation of group B Streptococcus. RESULTS: Prevalence of GBS colonization was 18% for two anatomical sites (heavy colonization), and 37% for one anatomical site; the overall prevalence was 54.9%. Three or more sexual partners increased by 4-fold the risk of heavy GBS colonization (p < 0.01). In this study 49 (34%) women were pregnant, 26 (53%) of them were colonized by GBS and 7 (14.3%) were heavy colonized. CONCLUSIONS: Prevalence of GBS during pregnancy in Mexican women was higher than the reported previously, even in developed countries. Risk of colonization increased by 4-fold with a history of three or more sexual partners.

Adolescent↗
PubMed2006

[Two cases of pelviperitonitis caused by Streptococcus pneumoniae].

Streptococcus pneumoniae is known to be a common component of the indigenous flora of the oropharynx. Pneumococci are most notable for their role in causing otitis, sinusitis, meningitis, and inflammation of the respiratory tract. Meanwhile, Streptococcus pneumoniae demonstrate a wide potential of virulence and they have been isolated from various clinical specimens, for example, in arthritis. This paper describes two cases of pneumococci being found in pelviperitonitis. A Streptococcus pneumoniae strain was found to be sensitive to ampicillin, cefazolin, ceftriaxone, erythromycin, oxacillin, trimethyl/sulfa.

Adult↗
PubMed2006

Purulent pericarditis caused by group a streptococcus.

Purulent pericarditis is a rare disease that is most often caused by organisms such as Staphylococcus aureus, Streptococcus pneumoniae, viridans streptococci, Haemophilus influenzae, and anaerobic bacteria. We present an unusual case of purulent pericarditis caused by Streptococcus pyogenes, Lancefield group A streptococcus (GAS), and we provide a review of the literature.

Cardiovascular Infections↗
PubMed1991

[Carriage of Streptococcus B in the mother and infant pair at birth. Apropos of 106 cases].

Streptococcus of group B found in the upper respiratory tract, the genito-urinary tract and the intestines of humans and animals is responsible for peri- and neonatal infections with serious outcomes: septicemia, meningitis. In Togo, the high frequency of neo-natal infections brought us to question the importance of streptococcus B in the mother-child couple at birth and to undertake a study conducted simultaneously in two maternities in the city of Lomé. During 8 weeks, from 19 March-19 May we studied 100 mother-child couples and 300 placentas. The following laboratory samples were taken: from the mother a vaginal smear during labor at 5 cm dilatation and rectal swabbing, from the new-born, a swabbing of the outer ear canal and an aspiration of gastric liquid, a fragment of the placenta taken under conditions of surgical asepsis. The results obtained prove that streptococcus B play an important role in the mother-child couple in Togo. The authors propose that more systematic research be conducted on children at birth with regard to this issue.

Carrier State↗
PubMed1991

Comparison of culture for group B streptococcus versus enzyme immunoassay and latex agglutination rapid tests: results in 250 patients during labor.

Two hundred fifty women in labor were screened for vaginal colonization by group B streptococcus using standard culture and two rapid tests. This primarily Hispanic population had a group B streptococcus vaginal colonization rate of 2.4% (95% confidence interval 0.9-5.2%) for the patients sampled. An enzyme immunoassay and a latex agglutination test for group B streptococcus antigen both had sensitivities of 33% and had specificities of 99 and 95%, respectively, when compared with culture. Neither rapid test appeared to be clinically useful for detecting colonized women in labor, although both can be useful in excluding colonization.

Antigens, Bacterial↗
PubMed1987

Cervical Gram stain for rapid detection of colonization with beta-streptococcus.

The group B beta-hemolytic streptococcus has been implicated in significant maternal and neonatal infections. The usual criteria for identifying the organism has been culture. A preliminary prospective study of the applicability of a simple, rapid, and readily available inexpensive screening tool, the Gram stain, was evaluated in 98 high-risk patients (premature rupture of the membranes and/or premature labor). In this selected population, cervical Gram stain was found to have a 98% negative predictive value for subsequent culture-proven group B beta-hemolytic streptococcus colonization. The sensitivity, specificity, and positive predictive values were, respectively, 93, 69, and 33%. Gram stain may be an appropriate test to assist in evaluation of group B beta-hemolytic streptococcus colonization in an at-risk population.

Female↗
PubMed1989

Isolation and characterization of two rumen Streptococcus bovis bacteriophages.

A method for the isolation of Streptococcus bovis bacteriophages from ruminal fluid of calves is described. Thirty to 2 x 10(3) phages per ml infecting Streptococcus bovis strains 4/1 and 47/3 were isolated directly from ruminal fluid. Two bacteriophages were characterized on the basis of plaque morphology, host ranges, electron microscopic morphology and DNA restriction endonuclease digestion patterns. The F1 and F3 phages formed clear plaques of different sizes. The plaque size of the F1 phage was about 1-1.5 mm in diameter, while the plaques of the F3 phage were larger (1.5-2.5 mm in diameter). Both phages are placed in group B of Bradley's scheme and have different host ranges. The first isolation of Streptococcus bovis phage DNA is reported. Restriction analysis of their DNAs showed that phages F1 and F3 had different numbers of cleavage sites in their genomes and that they were not identical.

Animals↗
PubMed1989

A selective procedure for the field isolation of pathogenic Streptococcus spp. of rainbow trout (Salmo gairdneri).

A procedure established for the selective isolation of the species of Streptococcus responsible for rainbow trout streptococcosis in South Africa, consisted of the inoculation of samples into nutrient broth which had been supplemented with 100 micrograms/ml of nalidixic acid, 160 micrograms/ml of oxolinic acid or 200 micrograms/ml of sodium azide. After incubation, the sample was plated onto tetrazolium agar on which the rainbow trout pathogenic Streptococcus species grew as a red colony. The colonies were isolated from the tetrazolium agar and identified as rainbow trout pathogenic isolates by biochemical and serological tests. In the laboratory the selective procedure is capable of detecting about 2 bacteria per ml. This procedure was used in the field and biochemically identical Streptococcus species were found in the mud and a freshwater crab from the water source of a site with a history of streptococcosis.

Animals↗