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Table 2 Prevalence of S. aureus according to breeding type, breed and antimicrobial treatment

From: Prevalence, molecular epidemiology, and antimicrobial resistance of methicillin-resistant Staphylococcus aureus from swine in southern Italy

Variable Category No. of farms No. of sampled animals S. aureus-positive MRSA-positive
No. (%) P-value No. (%) P-value
Breeding type Intensive 25 405 350 (86.4) NS 218 (53.8) > 0.001
Non-intensive 7 70 40 (57.1) 1 (1.4)
Total 32 475 390 (82.1)   219 (46.1)  
Breed Black pig 11a 77 47 (61.0) NS 7 (9.1) > 0.001
Other breeds 25 398 343 (86.2) 212 (53.3)
Total 32 475 390 (82.1)   219 (46.1)  
Antimicrobial treatment Treatedb – 60 57 (95.0) NS 45 (75.0) 0.010
Untreated – 415 333 (80.2) 174 (41.9)
Total – 475 390 (82.1)   219 (46.1)  
  1. aA minority of black pigs were occasionally reared also in 4 intensive farms
  2. bOngoing or suspended in the last twenty days
  3. NS, Not significant
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BMC Microbiology

ISSN: 1471-2180

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