Abstract
Patients who carry nasal methicillin-resistant Staphylococcus aureus (MRSA) may also harbour MRSA in the oro-pharyngeal cavity. However, the naso-oro-pharyngeal co-carriage is infrequently assessed. The incidence of concurrent MRSA carriage of the naso-oro-pharynx was ascertained, and the sensitivity of two methods, a throat swab and a phosphate buffered saline (PBS) oral rinse, for MRSA detection was investigated. Among nasal MRSA carriers, 80% harboured MRSA in the oro-pharynx. Among these patients, 15% had MRSA detected in the oro-pharynx and not in the throat. Oro-pharyngeal colonisation represents a significant reservoir to persistence as well as nasal recolonisation. Decolonisation methods effective in reducing oro-pharyngeal MRSA in addition to nasal carriage should be investigated.
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