Survival of livestock-associated methicillin-resistant Staphylococcus aureus CC398 on different surface materials

Table 3 The decay of livestock-associated methicillin-resistant Staphylococcus aureus on steel and plastic surfaces

Material	Strain	Decay constant (λ)/day^a	SE (λ)^b	Half-life (\({t}_{1/2}\)) in days^a
Steel	S1	0.089 (0.070–0.107)	0.009	7.83 (6.45–9.96)
Steel	S2	0.283 (0.212–0.354)	0.035	2.45 (1.96–3.27)
Plastic	S1	0.044 (0.031–0.057)	0.006	15.78 (12.22–22.26)
Plastic	S2	0.063 (0.045–0.080)	0.009	11.08 (8.70–15.28)

The presented values were obtained by fitting a model to observed bacterial data by using nonlinear least squares (NLS) method. Separate models were fitted to two bacterial strains (S1 and S2) on two surface materials (steel and plastic)
^aCorresponding 95% confidence intervals are presented in parenthesis
^bStandard error for daily decay constant (λ)

ISSN: 1751-0147