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Table 3 Pathogens identified and antibiotic therapies used in 344 hospitalizations among 216 IVDU*

From: Appropriateness of antibiotic treatment in intravenous drug users, a retrospective analysis

 

n (%)

Pathogens

 

   Staphylococcus aureus

131‡ (38.1)

   Beta-hemolytic streptococci

42 (12.2)

   Viridans streptococci

30 (8.7)

   Enterobacteriaceae

17 (4.9)

   Streptococcus pneumoniae

14 (4.1)

   Pseudomonas aeruginosa

10 (2.9)

   Coagulase-negative staphylococci

6 (1.7)

   Mycobacteria spp.

6 (1.7)

   Other pathogens

15 (4.4)

   Polymicrobial infections

64 (18.6)

   No pathogen identified

73 (21.2)

Therapy †

 

   Beta-lactams

292 (84.9)

Amoxicilline/Clavulanate

129 (37.5)

Penicilline

54 (15.7)

Flucloxacilline

48 (14.0)

Cephalosporines

33 (9.6)

Piperacilline/Tazobactam

18 (5.2)

Carbapenemes

10 (2.9)

   Non-beta-lactams

 

Aminoglycosides (used in combination)

10 (2.9)

Fluoroquinolones

8 (2.3)

Antituberculosis drugs

6 (1.7)

Others

28 (8.1)

  1. * seen by an ID during a period of 5 years.
  2. † Antibiotic prescribed for the longest period intravenously during one hospitalization.
  3. ‡ Two of 131 (1.53%) S.aureus infections were due to methicillin-resistant S.aureus (MRSA).