Coagulase negative staphylococci, alpha hemolytic streptococci (not Streptococcus pneumoniae), diphtheroids
, and Bacillus species other than Bacillus anthracis were considered as possible contaminants.
Care should be taken in interpreting Gram staining of isolates because RGM is not identifiable by this method and could be mistaken for corynebacteria or diphtheroids
Types of micro-organisms isolated and degree of contamination associated with each type Samples with Samples with low-level positive (1 - 99 CFU/ml) Micro-organisms cultured growth n (%) contamination n (%) Diphtheroids
* 35 (55.
When possible contaminants (coagulase negative staphylococci, diphtheroids
, micrococci and Bacillus spp.
1) Bacteria involved are coagulase-negative staphylococci, corynebacteria, micrococci, diphtheroids
According to Dunkelberg (20), majority of disagreements regarding diagnosis of BV are due to falsely denoting diphtheroids
as Haemophilus vaginalis (now Gardneralla vaginalis).
There was no evidence of a pathogenic infection in the wound, as cultures yielded only 'normal skin flora', which included coagulase negative Staphylococcus and diphtheroids
TABLE 2 Microbiology of the positive cultures Tip Sleeve Hub Exit site fluid No growth 102 96 95 72 Growth 0 6 7 30 Scanty -- -- 5 21 Moderate -- -- 1 6 Abundant -- -- 1 3 Organisms Single CNS -- 5 4 scanty 19 scanty 3 moderate 3 abundant Diphtheroids
-- -- 1 abundant -- E.
1-4) In addition, gram-negative bacteria such as Escherichia coli and diphtheroids
have become more prevalent.
The bacteria isolated in those studies, such as coagulase-negative Staphylococcus, alpha-hemolytic Streptococcus, Enterobacter species, Acinetobacter species, non-aeruginosa species of Pseudomonas, Bacillus species, Alcaligenes species, diphtheroids
, and Escherichia vulneris, do not typically cause infections in healthy people.
Infections of CNS shunts are dominated by coagulase-negative Staphylococci, with Staphylococcus epidermidis accounting for 50 to 75% of infections, followed by Staphylococcus aureus, Gram negative enteric bacteria and anaerobic diphtheroids
Skin flora, including diphtheroids
, [alpha]-hemolytic streptococci, and coagulase-negative staphylococci, were the most common microorganisms found on 84 randomly tested stethoscopes from house staff, medical students, and attending physicians at Grady Memorial and Emory Crawford Long Hospitals, Atlanta.