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Table 3 Healthcare-associated infections and the site of infection: number, prevalence rate, relative frequency and prevalence of cultured microorganisms

From: Surveillance of healthcare-associated infections in Piemonte, Italy: results from a second regional prevalence study

  HAIs (No) Prevalence% (95% CI) Relative frequency % Microorganism (%)
Surgical site infection 57 0.73 (0.54-0.92) 9.83 Escherichia coli (29.4)
Staph. aureus (23.5)
Pseudomonas aeruginosa (8.8)
Urinary tract infection (symptomatic) 155 1.98 (1.67-2.28) 26.7 Escherichia coli (42.8)
Enterococcus faecalis (9.9)
Pseudomonas aeruginosa (6.6)
Proteus mirabilis (6.6)
Candida albicans (5.9)
Bloodstream infection 55 0.70 (0.52-0.87) 9.48 Staph. epidermidis (20.4)
Staph. aureus (18.5)
Escherichia coli (18.5)
Respiratory tract infection 127 1.62 (1.34-1.90) 21.9 Staph. aureus (23.4)
Pseudomonas aeruginosa (20.8)
Escherichia coli (10.4)
Other sites^ 186* 2.44 (2.11-2.80) 32.1  
Total 580 7.40 (6.83-7.99) 100  
  1. ^Gastrointestinal infections, skin and connective tissue infections, cardiovascular infections, ear infections, other UTI, systemic infections.
  2. *75 missing and 2 ‘unknown’ are included.