Medical Microbiology

NosocomialInfections 343

Table4. 17 RelativeFrequencyofCausativePathogensinNosocomialInfections

(arrangedaccordingtothepathogenfrequencylevelsinthecolumn

“Total”)^1

Bacteria UTI^2 RTI^2 PWI^2 SEP^2 Other^2 Total

E.coli 40.5 9.9 23.3 1 3.2 1 5.6 22.40

Enterococci 1 9.8 29.5 27 .2 0.0 11 .7 1 4.75

Staphylococcusaureus 3.2 25.4 45.5 1 5.8 1 3.0 11. 11

Coagulase-negativestaphylo-

cocci

4.5 9.9 1 4.8 34.2 1 0.4 8.0 1

Pseudomonasaeruginosa 5.4 46.5 26.0 0.0 1 .3 7 .65

Klebsiellasp. 4. 1 20.8 1 5.0 1 0.5 3.9 6.0 1

Fungi 5.9 1 9. 1 0.0 2.6 11 .7 6.0 1

Streptococcussp. 1 .8 1 6.8 8.2 0.0 9. 1 4.7 4

Proteusmirabilis 5.0 4.0 2.4 0.0 2.6 3. 10

Enterobactersp. 1 .4 4.0 4.7 2.6 1 .3 2.00

Serratiasp. 0.9 1 .7 3.8 7 .9 0.0 2.00

OtherEnterobacteriaceae 1 .9 6.3 9.7 2.6 3.9 2.00

Acinetobactersp. 2.7 5.7 1 .2 0.0 0.0 1 .82

Anaerobes 0.5 0.0 4.8 0.0 0.0 1 .46

OtherGram-positivebacteria 0.0 0.0 7 .3 2.6 2.6 1 .28

Morganellasp. 1 .4 4.0 0.0 0.0 1 .3 1 .09

Providenciasp. 0.9 0.0 5.0 0.0 2.6 1 .09

Pseudomonadaceae(exception:

P.aeruginosa)

0.0 3.4 1 .2 2.6 2.6 1 .09

Other(under 1 %) 0.5 0.0 5.0 2.6 1 .3 3.48

(^1) Data(modified)acc.to“NosokomialeInfektioneninDeutschland–Erfassungund
Prevention(NIDEP–Studie).”Vol.56,PublicationSeriesoftheGermanFederal
HealthOffice.NomosVerlagsgesellschaft,Baden-Baden, 1 995.
(^2) UTI=urinarytractinfections,RTI=lowerrespiratorytractinfections,PWI=post-
operativewoundinfections,SEP=primarysepsis,Other=allotherinfections.
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Kayser, Medical Microbiology © 2005 Thieme