When an invasive pro- cedure has occurred in close proximity to the onset of symp- toms of IE, it cannot be determined that it caused IE, because there may have been episodes of bacteremia from natural causes in the same time frame. Table 2. Bacteria Recovered From Blood After Dental Procedures* in Children ; A georgiae46 ; A gerensceriae46 ; A israelii45,47 ; ; A lingnae46 ; A meyeri56 ; A meyeri/odontolyticus45 ; A naeslundii46,56 ; ; A odontolyticus45,46,48 ; A viscosus45,46,56 ; A urinae57 ; A viridans46 ; B licheniformis57 ; B megaterium57 ; B pumilus57 ; B capillosus40 ; B distasonis48 ; B fragilis48 ; C hofmanii45,51 ; E aerofaciens45,48 ; E lentum45 ; E ventriosum40 ; F fusiforme45 ; F nucleatum45,48 ; F varium48 ; H parainfluenza40,42,44 46,48,50 ; L acidophilus48 ; L brevis47 ; L casei56 ; L paracasei56 ; L greyi47 ; M nonliquefaciens45 ; N catarrhalis45 ; N cinerea47,48 ; N flava46 ; ; N pharynges46 ; N polysaccharea53 ; N sicca/subflava48 ; P asaccharolyticus45 ; P micros45,48,56 ; P prevotii45 ; P acnes46 ; P corporis48 ; P melaninogenica45,50,61 ; P acnes43,54 ; P jensenii38 Rothia; R dentocariosa44,54 ; R mucilaginosus44 Staphylococcus; S aureus42,44,52,53,57 ; S auricularis48 ; S capitis46 48,56,57 ; S cohnii46 ; ; S haemolyticus46 48 ; S hominis46,47,53,56 ; ; S saccharolyticus48 ; S saprophyticus46 ; S schleiferi46,48 ; ; S warneri46,47,56 S anginosus group42,43,45,49,53,64 ; S anginosus48,56 ; S constellatus45,46 ; S bovis group; S bovis42,48,64 ; S gordonii46,52,57 S mutans group; S mutans42,44 46,48,51,53,54,56,57 ; S sobrinus47,56,64 S mitis group; S infantis44 ; S mitis42,44 48,51 53,56,57,64 ; S pneumoniae46,53 ; S oralis (S mitior, S sanguis II)40,44 47,49,52,57,64 S sanguinis group; S parasanguinis46,56 ; S sanguinis40,42,44 47,49,50,53,56,57,64 S salivarius group57 ; S salivarius45 48,52,53,56,57,64 ; S vestibularis47,52 ; V alcalescens61 ; V dispar56 ; V parvula40,44,48 *Dental procedures include dental extractions, restorations, dental hygiene (cleaning) procedures, toothbrushing, and other procedures. 