Staphylococcus Aureus Nasal Carriage

Study Overview
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Brief Summary
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The repeated exposition to S. aureus is considered as a determining factor of acquisition of the nasal colonization. The healthcare professionals are regularly in touch with this pathogenic bacterium. Prevalence of the nasal carriage of S. aureus in this population was the object of several studies but little took into account the respect for the rules of good hygienic practice. The results of our previous study carried out during the international congress of staphylococci (ISSSI, Lyon in August 26-30th, 2012) showed an association between the work in a hospital environment and the increase of the risk of nasal carriage. On the contrary, the use of the hydro-alcoholic solutions had a protective effect against this carriage. However, sized of the health care population of our study was limited. The goal of this study is to confirm our previous results on a larger cohort of healthcare professionals. The main objective is to estimate the prevalence of nasal carriage according to the professional category and by taking into account the degree of conformity with good hygiene practices including the use of hydro-alcoholic solutions.

Official Title
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Staphylococcus Aureus Nasal Carriage Among Technical Staff of a Teaching Hospital: An Unexpected Group at Risk of Colonization

Conditions
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Nasal Carriage of Staphylococcus Aureus

Intervention / Treatment
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* Other: nasal swabs will be collected


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: - Employees with Consent. Exclusion Criteria: - Presence of contraindicating medical conditions preventing nasal swabing

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group Methicillin susceptible Staphylococcus aureus (MSSA)<br> | Other: nasal swabs will be collected<br>* After formal consent, nasal swabs are collected for each participant. SA nasal carriage and its susceptibility to methicillin is determined using a rapid PCR technique (GenExpert, Cepheid). Each participant is asked to complete a short questionnaire regarding some demographic variables, smoking habits, long-term medication, sector of activity, and direct manipulation of the pathogen.<br>|
| Group methicillin resistant Staphylococcus aureus (MRSA)<br> | Other: nasal swabs will be collected<br>* After formal consent, nasal swabs are collected for each participant. SA nasal carriage and its susceptibility to methicillin is determined using a rapid PCR technique (GenExpert, Cepheid). Each participant is asked to complete a short questionnaire regarding some demographic variables, smoking habits, long-term medication, sector of activity, and direct manipulation of the pathogen.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rate of nasal carriage of Staphylococcus aureus (SA) among employees of a teaching hospital in Lyon-France according to professional exposure and compliance with good hygiene practices. |  | after 2 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prevalence of nasal carriage of Staphylococcus aureus (SA) methicillin susceptible (MSSA) or methicillin resistant (MRSA) among employees of a teaching hospital in Lyon-France. |  | after 2 days | 
| Presence or not of nasal carriage of Staphylococcus aureus (SA) among employees of a teaching hospital in Lyon-France at particular conditions as long medication intake and overweight. |  | after 2 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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nasal carriage, Staphylococcus aureus, good hygiene practices