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Updated: Jul 31, 2026

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
Published on: May 8, 2013
Strains of methicillin-resistant Staphylococcus aureus isolated in Australian hospitals from 1986 to 1990. Australian
1Department of Microbiology, Royal Prince Alfred Hospital, Sydney, Australia.
Abstract:
Major teaching hospitals in each state of Australia participated in five annual surveys (1986 to 1990) of clinically significant isolates of Staphylococcus aureus. All isolates of methicillin-resistant S. aureus (MRSA) were phage typed with the Basic International Set and an Australian experimental set of typing phages. One or two predominant strains were isolated in individual states during each of the survey periods. Less than 3% (33 of 1243) of MRSA isolates were not typable and more than 86% (1070 of 1243) belonged to strains that were isolated on at least five occasions during a single survey period. Strains of phage types 83A/85/95/90/88@47T/90A/87M/13M and 85/90/88@47T/90A/87A were the most prevalent, but each was identified in only four of the five surveys. Isolates of phage type (83A/85/95) weak/88@87M persisted throughout the survey period.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) strains in Australia showed predominant types between 1986-1990. One strain, 83A/85/95 weak/88@87M, persisted throughout the study period.
Area of Science:
- Microbiology
- Epidemiology
- Infectious Diseases
Background:
- Staphylococcus aureus is a significant pathogen.
- Methicillin-resistant Staphylococcus aureus (MRSA) poses a global health threat.
- Understanding MRSA strain epidemiology is crucial for infection control.
Purpose of the Study:
- To characterize the predominant phage types of MRSA in Australia.
- To monitor MRSA strain prevalence over a five-year period (1986-1990).
Main Methods:
- Phage typing of clinically significant MRSA isolates from Australian teaching hospitals.
- Utilized the Basic International Set and an Australian experimental set of typing phages.
- Analysis of isolates collected annually from 1986 to 1990.
Main Results:
- One to two predominant MRSA strains were identified in each Australian state annually.
- Over 86% of isolates belonged to strains detected at least five times within a survey year.
- Phage types 83A/85/95/90/88@47T/90A/87M/13M and 85/90/88@47T/90A/87A were most prevalent, identified in four of five surveys.
- MRSA phage type (83A/85/95) weak/88@87M demonstrated persistence throughout the study period.
Conclusions:
- MRSA epidemiology in Australia during 1986-1990 was characterized by a few dominant strains.
- Specific MRSA phage types showed significant prevalence and persistence.
- Continued surveillance of MRSA strains is essential for effective public health strategies.
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