Request for tender. A request for tenders (RFT) is a formal, structured invitation to suppliers to submit a bid to supply products or services.
The staphylococci are one of the most common environmental isolates found in clean room facility. Consequently, isolation followed by comprehensive and accurate identification is an essential step in any environmental monitoring program.
Etiology. The most commonly isolated microorganisms are Gram-positive cocci with coagulase-negative staphylococci, S. aureus and enterococci accounting for 65% of cases. Aerobic Gram-negative bacilli, including Escherichia coli, Proteus mirabilis and Pseudomonas aeruginosa, are far less frequent causes of infection (6%). Anaerobes, including Propionibacterium acnes, account for 4% of infections. Rare microbial causes of PJI have been reported (Figure 1 & Box 1, Box 2, Box 3). Approximately 7% of patients with PJI have aerobic and anaerobic cultures of periprosthetic tissue samples without any growth (i.e., culture-negative PJI).