“…While viridans streptococci are considered to be bacteria of low virulence, they could cause invasive infections such as bacteraemia, endocarditis or, uncommonly, meningitis. Viridans streptocococcal meningitis is often associated with cranial trauma and neurosurgical procedure; the most common species reported are Streptococcus mitis and Streptococcus salivarius (Cabellos et al , 1999; Cantey & Tamma, 2011; Carley, 1992; Enting et al , 1997). S. sanguinis is more often associated with dental structures (Johnson & Tunkel, 2005), and has also been described as a pathogen of meningitis following a neurosurgical procedure or vacuum extraction (Alba et al , 1994; Berga & Trierweiler, 1989; Heath et al , 1980).…”