Human-Associated Methicillin-Resistant Staphylococcus aureus from a Subtropical Recreational Marine Beach
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  • 作者:Lisa R. W. Plano (1) (2)
    Tomoyuki Shibata (2) (3) (4)
    Anna C. Garza (1)
    Jonathan Kish (2) (5)
    Jay M. Fleisher (6)
    Christopher D. Sinigalliano (2) (3)
    Maribeth L. Gidley (2) (3)
    Kelly Withum (2)
    Samir M. Elmir (2) (7)
    Suzanne Hower (1)
    Charlene R. Jackson (8)
    John B. Barrett (8)
    Timothy Cleary (9)
    Maureen Davidson (10)
    Johnnie Davis (10)
    Sampa Mukherjee (10)
    Lora E. Fleming (11) (2) (5)
    Helena M. Solo-Gabriele (12) (2)
  • 刊名:Microbial Ecology
  • 出版年:2013
  • 出版时间:May 2013
  • 年:2013
  • 卷:65
  • 期:4
  • 页码:1039-1051
  • 全文大小:613KB
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  • 作者单位:Lisa R. W. Plano (1) (2)
    Tomoyuki Shibata (2) (3) (4)
    Anna C. Garza (1)
    Jonathan Kish (2) (5)
    Jay M. Fleisher (6)
    Christopher D. Sinigalliano (2) (3)
    Maribeth L. Gidley (2) (3)
    Kelly Withum (2)
    Samir M. Elmir (2) (7)
    Suzanne Hower (1)
    Charlene R. Jackson (8)
    John B. Barrett (8)
    Timothy Cleary (9)
    Maureen Davidson (10)
    Johnnie Davis (10)
    Sampa Mukherjee (10)
    Lora E. Fleming (11) (2) (5)
    Helena M. Solo-Gabriele (12) (2)

    1. Departments of Pediatrics and Microbiology and Immunology, University of Miami Miller School of Medicine, 1600 NW 10th Ave, Miami, FL, 33136, USA
    2. NSF-NIEHS Oceans and Human Health Center, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Miami, FL, 33149, USA
    3. Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL, 33149, USA
    4. Public Health and Health Education Programs, Northern Illinois University, DeKalb, IL, 60115, USA
    5. Department of Epidemiology and Public Health, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
    6. Public Health Program College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, 33328, USA
    7. Miami-Dade County Health Department, Miami, FL, 33056, USA
    8. Bacterial Epidemiology and Antimicrobial Resistance Research Unit, Richard B. Russell Research Center, Agricultural Research Service, US Department of Agriculture, Athens, GA, 30605, USA
    9. Departments of Pathology and Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
    10. Center for Veterinary Medicine, US Food and Drug Administration, Laurel, MD, 20708, USA
    11. European Centre for Environment and Human Health (ECEHH), Peninsula College of Medicine and Dentistry (PCMD), Truro, Cornwall, TR1 3HD, UK
    12. Department of Civil, Architectural, and Environmental Engineering, University of Miami, Coral Gables, FL, 33124, USA
  • ISSN:1432-184X
文摘
Reports of Staphylococcus aureus including methicillin-resistant S. aureus (MRSA) detected in marine environments have occurred since the early 1990s. This investigation sought to isolate and characterize S. aureus from marine waters and sand at a subtropical recreational beach, with and without bathers present, in order to investigate possible sources and to identify the risks to bathers of exposure to these organisms. During 40?days over 17?months, 1,001 water and 36 intertidal sand samples were collected by either bathers or investigators at a subtropical recreational beach. Methicillin-sensitive S. aureus (MSSA) and MRSA were isolated and identified using selective growth media and an organism-specific molecular marker. Antimicrobial susceptibility, staphylococcal cassette chromosome mec (SCCmec) type, pulsed-field gel electrophoresis (PFGE) pattern, multi-locus sequence type (MLST), and staphylococcal protein A (spa) type were characterized for all MRSA. S. aureus was isolated from 248 (37?%) bather nearby water samples at a concentration range of <2-80 colony forming units per ml, 102 (31?%) ambient water samples at a concentration range of <2-60 colony forming units per ml, and 9 (25?%) sand samples. Within the sand environment, S. aureus was isolated more often from above the intertidal zone than from intermittently wet or inundated sand. A total of 1334 MSSA were isolated from 37 sampling days and 22 MRSA were isolated from ten sampling days. Seventeen of the 22 MRSA were identified by PFGE as the community-associated MRSA USA300. MRSA isolates were all SCCmec type IVa, encompassed five spa types (t008, t064, t622, t688, and t723), two MLST types (ST8 and ST5), and 21 of 22 isolates carried the genes for Panton–Valentine leukocidin. There was a correlation (r--.45; p--.05) between the daily average number of bathers and S. aureus in the water; however, no association between exposure to S. aureus in these waters and reported illness was found. This report supports the concept that humans are a potential direct source for S. aureus in marine waters.

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