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Molecular Diversity of Staphylococcus aureus Colonizing the Upper Respiratory Tract of Residents and Staff in A Nursing Home Cover

Molecular Diversity of Staphylococcus aureus Colonizing the Upper Respiratory Tract of Residents and Staff in A Nursing Home

Polish Journal of Microbiology
Volume 68 (2019): Issue 3 (September 2019)
By: MARTYNA KASELA,  AGNIESZKA GRZEGORCZYK and  ANNA MALM  
Open Access
|Sep 2019

Figures & Tables

Fig. 1.

MLVF dendrogram of S. aureus strains isolated from the anterior nares and the throat of residents and staff in a nursing home.Note. The name of S. aureus strain contains the following information: R – collected from resident, S – collected from staff member, number characteristic for each participant, N – nasal swab, T – throat swab. Two main clusters (A and B) and twelve subclusters (I–XII; cut-off > 35%) are marked in the dendrogram. MRSA strain (R38T) is marked with an asterisk.
MLVF dendrogram of S. aureus strains isolated from the anterior nares and the throat of residents and staff in a nursing home.Note. The name of S. aureus strain contains the following information: R – collected from resident, S – collected from staff member, number characteristic for each participant, N – nasal swab, T – throat swab. Two main clusters (A and B) and twelve subclusters (I–XII; cut-off > 35%) are marked in the dendrogram. MRSA strain (R38T) is marked with an asterisk.

Fig. 2.

MLVF of S. aureus strains isolated from the nose (N) and the throat (T) of thirteen residents living in a nursing home.Note. Four residents were simultaneously colonized with the same genetic variant of S. aureus (strain R6N and R6T; strain R8N and R8T; strain R17N and R17T; strain R25N and R25T) and one resident was inhabited by two genetically different strains (R18N and R18T). M – molecular marker (100–3000 bp).
MLVF of S. aureus strains isolated from the nose (N) and the throat (T) of thirteen residents living in a nursing home.Note. Four residents were simultaneously colonized with the same genetic variant of S. aureus (strain R6N and R6T; strain R8N and R8T; strain R17N and R17T; strain R25N and R25T) and one resident was inhabited by two genetically different strains (R18N and R18T). M – molecular marker (100–3000 bp).

Basic demographic characteristics of participants and the prevalence of S_ aureus colonization_

Total(n = 102)Residents(n = 60)Staff(n = 42)
Age (years)
Median (range)68 (26-97)81.5 (56-97)43 (26-67)
Gender n (%)
Female78 (76.5)43 (71.7)35 (83.3)
Male24 (23.5)17 (29.3)7 (16.7)
S. aureus colonization n (%)47 (46.1)28 (46.7)19 (45.2)
Nares17 (36.2)10 (35.7)7 (36.8)
Throat11 (23.4)6 (21.4)5 (26.4)
Nares and throat19 (40.4)12 (42.9)7 (36.8)

The antimicrobial resistance profiles of S_ aureus strains isolated from residents and staff in a nursing home_

Main clusterSub-clusterS. aureus strainResistance profile
AIVR23TTET
IVS123T, S123NTET
IVS133T, S133NTET
VS116TTOB, GEN
BVIIR38TFOX, TOB, CIP, LEV, DAP
IXR42T, R42NTET
IXS139NE, CC
XR2TE, CC
XIR33T, R33NE, CC
XIIS134NE, CC
--R41NTET, TOB, GEN
DOI: https://doi.org/10.33073/pjm-2019-039 | Journal eISSN: 2544-4646 | Journal ISSN: 1733-1331
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Language: English
Page range: 371 - 376
Submitted on: May 6, 2019
|
Accepted on: Jul 25, 2019
|
Published on: Sep 3, 2019
Published by: Polish Society of Microbiologists
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
colonization,
elderly,
genotyping,
nursing home
Related subjects:
Life sciences,
Microbiology and virology

© 2019 MARTYNA KASELA, AGNIESZKA GRZEGORCZYK, ANNA MALM, published by Polish Society of Microbiologists
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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