Table 1.

Some features of Mycoplasma species of human origin

SpeciesYr first isolated or namedPrimary site colonized Metabolism of: Considered pathogenic
Genital tractRespiratory tractGlucoseArginine
M. hominis 1937+++
M. fermentans 1952+?+++
U. urealyticum a 1954++
M. salivarium 1955++
M. primatum 1955++
M. pneumoniae 1962+++
M. orale 1964++
M. buccale 1965++
M. faucium 1965++
M. lipophilum 1974++
M. genitalium 1981+++
M. pirum 1985++?
M. spermatophilum 1991++?
M. penetrans 1991+++?
M. amphoriforme 2005++?
  • a Metabolizes urea uniquely. In 2002, it was divided into U. urealyticum and U. parvum. ?, not certain.