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Abstract:
Strains of Staphylococcus aureus resistant to methicillin were first described soon after the introduction of this antibiotic. Methicillin, the first of the anti-staphylococcal penicillins, was soon replaced by cloxacillin and flucloxacillin, which have the advantage of good oral absorption, but strains of Staphylococcus aureus that are resistant to methicillin are invariably resistant to cloxacillin, flucloxacillin and the cephalosporins. A number of outbreaks of MRSA occurred in the 1960s, but the problem disappeared in the 1970s, which has been referred to as 'the decade of complacency'. In the early 1980s MRSA re-emerged as a significant cause of hospital-acquired infection in many countries, including England (London area), Eire (Dublin), Australia (Perth), Saudi Arabia and the USA. Epidemic strains of MRSA are distinguished by the ability to colonise skin very effectively. They are spread rapidly between patients via the hands of medical, nursing and paramedical staff. Most district general hospitals no longer have an isolation ward; patients with infections are generally nursed in side rooms.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) re-emerged in the 1980s as a major cause of hospital infections. These epidemic strains spread rapidly through healthcare staff, highlighting the need for infection control.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Public Health
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) emerged shortly after methicillin's introduction.
- MRSA strains are resistant to methicillin, cloxacillin, flucloxacillin, and cephalosporins.
- After a decline in the 1970s, MRSA re-emerged as a significant hospital-acquired infection in the 1980s.
Purpose of the Study:
- To describe the re-emergence and characteristics of MRSA.
- To highlight the transmission routes and implications for healthcare settings.
Main Methods:
- Observational analysis of MRSA outbreaks and characteristics.
- Review of historical trends in MRSA prevalence.
Main Results:
- Epidemic MRSA strains effectively colonize skin.
- Rapid transmission occurs via healthcare personnel.
- Most hospitals lack isolation wards, leading to patient co-location.
Conclusions:
- MRSA remains a significant threat in hospital settings.
- Effective skin colonization and transmission by staff necessitate robust infection control measures.
- Changes in hospital infrastructure impact MRSA management.