Streptococcus milleri

Whiley, R.A., Duke, B., Hardie, J.M., Hall L.M. (1995). Heterogeneity among 16S-23S rRNA intergenic spacers of species within the Streptococcus milleri group. Microbiology, 141, 1461-1467. 

In order to reach a diagnosis, it is necessary to select the examination method which is most suitable for the detection of the respective pathogen. When applying suitable bacteriological techniques, anaerobes can be found in 30-40% of cases. Solitary liver abscesses (63%) displayed a polymicrobial pathogenic spectrum in twice as many cases as did multiple abscesses (30%). (13) Streptococcus milleri is a very common cause. (72) It can be cultured in a carbon dioxide-enriched medium, (s. tab. 27.2)... 

Of 302 clinical isolates of S. pyogenes from Portugal, 108 were resistant to erythromycin, and 86 also had a constitutive resistance to clindamycin (MLSB phenotype) (59). Four isolates had a phenotype characterized by low-level erythromycin resistance and high-level chn-damycin resistance. In another European study of 286 S. pneumoniae strains, 7% were resistant to penicUhn, and 35% were also resistant to clindamycin (60). Of 3205 group A streptococcal strains from Canada, only 18 and 2 strains respectively showed inducible and constitutive resistance to clindamycin (61). Among 180 strains of the Streptococcus milleri group isolated in Spain, 17% were resistant to clindamycin (62). 

Limia A, Jimenez ML, Alarcon T, Lopez-Brea M. Five-year analysis of antimicrobial susceptibility of the Streptococcus milleri group. Eur J Clin Microbiol Infect Dis 1999 18(6) 440-4. 

Figure 7.6 Mass spectra resulting from the reaction of HsO with the headspace emitted from a cell culture containing (a) Streptococcus milleri and (b) P. aeruginosa. Reproduced from [12] with permission from Elsevier.

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