What does HWA stand for?
HWA stands for hospital-wide antibiogram
This definition appears rarely
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Samples in periodicals archive:
In a study in Wales,  United Kingdom, comparison of regional resistance rates from laboratories and seven hospitals was done; the difference in resistance rates between duplicate versus nonduplicate isolates was significant. ~ Utility of Antibiograms The antibiogram helps in monitoring antimicrobial resistance trends over different periods: ICU or ward specific data and inpatient versus outpatient data, etc. Different parts of a healthcare institution can have different patterns of antimicrobial use and resistance. Binkley et al.  compared a unit specific antibiogram versus that of the hospital wide antibiogram.
At TriStar CMC, a yearly hospital-wide antibiogram is compiled, including rates of methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococci, and extended-spectrum beta-lactamase-producing organisms. Rates of C. difficile infection also are reported every other month to the infection prevention committee. These outcome measures can be used to identify targets for improvement, such as in the instance of a C.