The purpose of this study is to determine the better approach between the currently procedure (i.e. standards precautions) and a reinforced strategy to control MRSA transmission in the institutionalized population of nursing homes in Canton of Vaud, Switzerland.

MRSA carriage among nursing homes residents of Canton Vaud, Switzerland, is increasing, despite use of standard precautions. Recommendation to prevent MRSA transmission in long term care facilities are lacking. We aim to reinforce the current infection control strategy by general MRSA screening of institutionalised residents and decolonisation of MRSA carriers. Because the uncertainties in the impact of this reinforced strategy, we aim to compare this action to the policy actually applied.

Inclusion Criteria:

• all nursing homes of canton Vaud, Switzerland, that give the consent of participation

Exclusion Criteria:

- refusal to participate

Inclusion criteria for decolonisation in intervention nursing homes:

- all MRSA positive residents living in a Nursing Home included in the intervention group

Exclusion Criteria for decolonisation:

• residents that refuse to be screened or refused the decolonisation
• life expectancy shorter of 7 days
• known intolerance of disinfectant/ topical antibiotics used in the protocol
• active MRSA infection
• asymptomatic MRSA bacteriuria
• stage IV wound (according to National Pressure Ulcer Advisory Panel)