Abstract In 2003 the World Health Organization (WHO) convened a working group and
published a set of standard methods for studies measuring nasopharyngeal carriage of …

Streptococcus mitis is a viridans streptococcus and a normal commensal of the human
oropharynx. However, S. mitis can escape from this niche and cause a variety of infectious …

Background: Streptococci frequently cause infective endocarditis (IE), yet the prevalence of
IE in patients with bloodstream infections (BSIs) caused by different streptococcal species is …

Streptococcus pneumoniae is a member of the Mitis group of streptococci which, according
to 16S rRNA-sequence based phylogenetic reconstruction, includes 12 species. While other …

Porphyromonas gingivalis is present in dental plaque as early as 4 h after tooth cleaning,
but it is also associated with periodontal disease, a late-developing event in the microbial …

The Mitis group of the genus Streptococcus currently comprises 20 species with validly
published names, including the pathogen S. pneumoniae. They have been the subject of …

The genetically diverse viridans group streptococci (VGS) are increasingly recognized as
the cause of a variety of human diseases. We used a recently developed multilocus …

Background Methods for assigning strains to bacterial species are cumbersome and no
longer fit for purpose. The concatenated sequences of multiple house-keeping genes have …

The bacterium Streptococcus pneumoniae is one of the leading causes of fatal infections
affecting humans. Intriguingly, phylogenetic analysis shows that the species constitutes one …

Streptococci and veillonellae occur in mixed-species colonies during formation of early
dental plaque. One factor hypothesized to be important in assembly of these initial …