Fig 2.

(a) Recovery of methicillin-resistant S. aureus (MRSA) from various material surfaces after being subjected to a 20-min aerosolization treatment regimen with either sterile water (white bars) or one of three chlorine-containing biocides (sodium hypochlorite [dark grey bars], chlorine dioxide [light grey bars], ECAS [black bars]) prepared to a matched free-chlorine concentration of 100 ppm (n = 6) (means ± SD). *, no viable bacteria recovered. (b) Comparative efficacy matrix of the four aerosolization treatment regimens. A reported value indicates a significant difference (P < 0.05) in the number of microbes recovered (log₁₀ CFU coupon⁻¹) when comparing the two treatment regimens. ns, not significant.