The study evaluated the percentage of MRSA strains with reduced susceptibility to glycopeptides in four intensive care units by environmental sampling of air and surfaces. Antibiograms revealed that 85.7% of all air samples were positive for MRSA, and that 64.3% of all the samples were heterogeneously resistant to glycopeptides. Methicillin resistance was recorded in 41.0% of surface samples, and 32.5% of all samples proved positive for hGISA. International Journal of Hygiene and Environmental Health 2007; 23 Jul.