{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T18:31:30Z","timestamp":1787941890791,"version":"build-2784847793"},"reference-count":0,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2009,3,1]],"date-time":"2009-03-01T00:00:00Z","timestamp":1235865600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microbial Drug Resistance"],"published-print":{"date-parts":[[2009,3]]},"abstract":"\n The current study compared antimicrobial susceptibility of\n Listeria innocua<\/jats:italic>\n ,\n L. welshimeri<\/jats:italic>\n , and\n L. monocytogenes<\/jats:italic>\n isolated from various sources. Antimicrobial susceptibility testing was performed using a microbroth procedure with Sensititre\n \u00ae<\/jats:sup>\n minimum inhibitory concentration plates containing 18 antimicrobials. Resistant isolates were analyzed for the presence of antimicrobial resistance genes using PCR. The majority of\n L. monocytogenes<\/jats:italic>\n isolates were resistant to oxacillin (99%, 89\/90) and ceftriaxone (72%, 65\/90), while few isolates were resistant to clindamycin (21%, 19\/90) and ciprofloxacin (2%, 2\/90). When selected sources of\n L. monocytogenes<\/jats:italic>\n are compared, resistance to ceftriaxone, clindamycin, and oxacillin ranged from 27% to 86%, 7% to 43%, and 96% to 100%, respectively. Resistance to ciprofloxacin (6%, 2\/34), quinupristin\/dalfopristin (7%, 1\/14), and tetracycline (7%, 1\/15) was observed with\n L. monocytogenes<\/jats:italic>\n isolated from food, animal, and environmental sources, respectively. All\n L. welshimeri<\/jats:italic>\n isolates (6\/6) were resistant to streptomycin, quinupristin\/dalfopristin, ciprofloxacin, rifampin, oxacillin, penicillin, and clindamycin, while most isolates (67%, 4\/6) were resistant to trimethoprim\/sulfamethoxazole. All\n L. innocua<\/jats:italic>\n isolates (4\/4) were resistant to oxacillin and penicillin, whereas 75% (3\/4) of isolates were resistant to tetracycline, ceftriaxone, and clindamycin. Resistant isolates were negative for\n aadA<\/jats:italic>\n ,\n strA\u2013B<\/jats:italic>\n ,\n sul I\u2013II<\/jats:italic>\n ,\n penA<\/jats:italic>\n ,\n vat<\/jats:italic>\n (A\u2013E),\n vga<\/jats:italic>\n (A\u2013B), and\n vgb<\/jats:italic>\n (A\u2013B). However,\n tetM<\/jats:italic>\n was detected among tetracycline-resistant isolates\n . L. welshimeri<\/jats:italic>\n was resistant to more of the tested antimicrobials than the other two\n Listeria<\/jats:italic>\n species tested, but resistance was not attributed to selected resistance genes. These data demonstrate the variability in resistance among\n Listeria<\/jats:italic>\n species. However, the human pathogen\n L. monocytogenes<\/jats:italic>\n appears to be the least resistant among the tested species.\n <\/jats:p>","DOI":"10.1089\/mdr.2009.0863","type":"journal-article","created":{"date-parts":[[2009,2,13]],"date-time":"2009-02-13T09:57:40Z","timestamp":1234519060000},"page":"27-32","source":"Crossref","is-referenced-by-count":52,"title":["Comparative Antimicrobial Susceptibility of\n Listeria monocytogenes<\/i>\n ,\n L. innocua<\/i>\n , and\n L. welshimeri<\/i>"],"prefix":"10.1177","volume":"15","author":[{"given":"Johnnie A.","family":"Davis","sequence":"first","affiliation":[{"name":"Richard B. Russell Research Center","place":["Georgia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charlene R.","family":"Jackson","sequence":"additional","affiliation":[{"name":"Richard B. Russell Research Center","place":["Georgia"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2009,3]]},"container-title":["Microbial Drug Resistance"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/mdr.2009.0863","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/mdr.2009.0863","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T20:25:17Z","timestamp":1777667117000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/full\/10.1089\/mdr.2009.0863"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,3]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2009,3]]}},"alternative-id":["10.1089\/mdr.2009.0863"],"URL":"https:\/\/doi.org\/10.1089\/mdr.2009.0863","relation":{},"ISSN":["1076-6294","1931-8448"],"issn-type":[{"value":"1076-6294","type":"print"},{"value":"1931-8448","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,3]]}}}