Material | Strain | Platea | Time to die out (weeks) |
|---|
Concrete disk | S1 | BA | 5 |
Concrete disk | S1 | MRSA | 5 |
Concrete disk | S2 | BA | 3 |
Concrete disk | S2 | MRSA | 3 |
Concrete piece | S1 | BA | 5 |
Concrete piece | S1 | MRSA | 7 |
Concrete piece | S2 | BA | 9 |
Concrete piece | S2 | MRSA | 9 |
- Two different types of concrete (concrete disk and concrete piece) were used as sample materials. The livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) were determined to have died out when the bacteria had become undetectable on all viable count plates. The viable counts were prepared on 5% bovine blood agar and selective Oxoid Brilliance MRSA 2 agar. The first two viable counts were performed at 1 week intervals and the subsequent counts at biweekly intervals for a total period of 5 weeks for the concrete disks and 11 weeks for the large concrete pieces
- aBA = 5% bovine blood agar, MRSA = selective Oxoid Brilliance MRSA 2 agar
