{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T02:38:29Z","timestamp":1767839909083,"version":"3.49.0"},"reference-count":41,"publisher":"Microbiology Society","issue":"9","funder":[{"name":"Comit\u00e9 para el Desarrollo de la Investigaci\u00f3n CODI, Universidad de Antioquia","award":["2017-15526"],"award-info":[{"award-number":["2017-15526"]}]},{"DOI":"10.13039\/100007637","name":"Departamento Administrativo de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n","doi-asserted-by":"crossref","award":["111577756947"],"award-info":[{"award-number":["111577756947"]}],"id":[{"id":"10.13039\/100007637","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,9,1]]},"abstract":"\n Introduction.<\/jats:bold> While colonization by \n \n Staphylococcus aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic> in haemodialysis patients has been assessed, knowledge about colonization by beta-lactam-resistant Gram-negative bacilli is still limited.<\/jats:p>\n \n Aim.<\/jats:bold> To describe clinical and molecular characteristics in haemodialysis patients colonized by \n \n S. aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic> (MSSA-MRSA) and beta-lactam-resistant Gram-negative bacilli in an ambulatory renal unit.<\/jats:p>\n \n Methodology.<\/jats:bold> The study included patients with central venous catheters in an outpatient haemodialysis facility in Medell\u00edn, Colombia (October 2017\u2013October 2018). Swab specimens were collected from the nostrils and skin around vascular access to assess colonization by \n \n S. aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic> (MSSA-MRSA). Stool samples were collected from each patient to evaluate beta-lactam-resistant Gram-negative bacilli colonization. Molecular typing included PFGE, multilocus sequence typing (MLST), spa<\/jats:italic> typing and enterobacterial repetitive intergenic consensus-PCR (ERIC). Clinical information was obtained from medical records and personal interview.<\/jats:p>\n \n Results.<\/jats:bold> A total of 210 patients were included in the study. \n \n S. aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic> colonization was observed in 33.8\u200a% (n<\/jats:italic>=71) of the patients, 4.8\u200a% (n<\/jats:italic>=10) of which were colonized by methicillin-resistant \n \n S. aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic>. Stool samples were collected from 165 patients and of these 41.2\u200a% (n<\/jats:italic>=68) and 11.5\u200a% (n<\/jats:italic>=19) were colonized by extended-spectrum-beta-lactamase-producing (ESBL) and carbapenem-resistant bacilli, respectively. Typing methods revealed high genetic diversity among \n \n S. aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic> and ESBL-producing Gram-negative bacilli (ESBL-GNB). Antibiotic use and hospitalization in the previous 6\u2009months were observed in more than half of the studied population.<\/jats:p>\n \n Conclusion.<\/jats:bold> The high colonization by ESBL-GNB in haemodialysis patients shows evidence for the need for stronger surveillance, not only for \n \n S. aureus<\/jats:ext-link>\n <\/jats:named-content>\n <\/jats:italic> but also for multidrug-resistant bacilli in order to avoid their spread. Additionally, the high genetic diversity suggests other sources of transmission outside the renal unit instead of horizontal transmission between patients.<\/jats:p>","DOI":"10.1099\/jmm.0.001244","type":"journal-article","created":{"date-parts":[[2020,8,19]],"date-time":"2020-08-19T16:15:55Z","timestamp":1597853755000},"page":"1132-1144","source":"Crossref","is-referenced-by-count":3,"title":["High frequency of colonization by diverse clones of beta-lactam-resistant Gram-negative bacilli in haemodialysis: different sources of transmission outside the renal unit?"],"prefix":"10.1099","volume":"69","author":[{"given":"Johanna M.","family":"Vanegas","sequence":"first","affiliation":[{"name":"L\u00ednea de Epidemiolog\u00eda Molecular Bacteriana, Grupo de Investigaci\u00f3n en Microbiolog\u00eda B\u00e1sica y Aplicada, Escuela de Microbiolog\u00eda, Universidad de Antioquia, Medell\u00edn, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1682-4915","authenticated-orcid":false,"given":"Lorena","family":"Salazar-Ospina","sequence":"additional","affiliation":[{"name":"L\u00ednea de Epidemiolog\u00eda Molecular Bacteriana, Grupo de Investigaci\u00f3n en Microbiolog\u00eda B\u00e1sica y Aplicada, Escuela de Microbiolog\u00eda, Universidad de Antioquia, Medell\u00edn, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniela","family":"Montoya-Urrego","sequence":"additional","affiliation":[{"name":"L\u00ednea de Epidemiolog\u00eda Molecular Bacteriana, Grupo de Investigaci\u00f3n en Microbiolog\u00eda B\u00e1sica y Aplicada, Escuela de Microbiolog\u00eda, Universidad de Antioquia, Medell\u00edn, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juli\u00e1n","family":"Builes","sequence":"additional","affiliation":[{"name":"Departamento de Nefrolog\u00eda, Hospital San Vicente Fundaci\u00f3n, Medell\u00edn, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gustavo E.","family":"Roncancio","sequence":"additional","affiliation":[{"name":"Departamento de Enfermedades Infecciosas, Cl\u00ednica CardioVID, Medell\u00edn, Colombia"},{"name":"L\u00ednea de Epidemiolog\u00eda Molecular Bacteriana, Grupo de Investigaci\u00f3n en Microbiolog\u00eda B\u00e1sica y Aplicada, Escuela de Microbiolog\u00eda, Universidad de Antioquia, Medell\u00edn, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9183-1912","authenticated-orcid":false,"given":"J. 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