Table 3b.
Characteristics of Staphylococcus aureus isolates collected from swine anatomical sites, hog facility environments, and worker surrogate samples.
| Isolate level | Characteristics of S. aureus isolates | |||||
|---|---|---|---|---|---|---|
|
| ||||||
| Isolate N | S. aureus n (%) | spa type t337 n (%) | scn negative t337 n (%) | MDRSA t337c n (%) | tet-R t337c n (%) | |
| IHO swine | 203d | 37 (18%) | 37 (100% of 37) | 37 (100% of 37) | 36 (97% of 37) | 16 (43% of 37) |
| IHO environment | ||||||
| Area airbornea | 40e | 24 (60%) | 24 (100% of 24) | 24 (100% of 24) | 24 (100% of 24) | 5 (21% of 24) |
| Settled dust | 21d | 0 (0%) | No isolates | No isolates | No isolates | No isolates |
| IHO worker surrogate | ||||||
| Personal airbornea | 10e | 2 (20%) | 2 (100% of 2) | 2 (100% of 2) | 2 (100% of 2) | 0 (0% of 2) |
IHO: Industrial Hog Operation; AFHO: Antibiotic-Free Hog Operation
Area airborne: Anderson, Inhalable (Button) Area, and Impinger (SKC and AGI-30) samplers; Personal airborne: Inhalable (Button) Personal samplers only; N.B. S. aureus was recovered from all sampler types at the one IHO.
A sample was considered S. aureus positive if at least one spa positive isolate was recovered from that sample;
MDRSA: multidrug resistant S. aureus; tet-R: tetracycline resistant (non-susceptible);
Total number of coagulase-positive staphylococci identified on Baird-Parker agar following broth-enrichment culture;
Total number of target and non-target isolates identified using CHROMagar Staph aureus plates, without enrichment