{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,10]],"date-time":"2026-02-10T22:32:56Z","timestamp":1770762776946,"version":"3.50.0"},"reference-count":0,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[1998,10,1]],"date-time":"1998-10-01T00:00:00Z","timestamp":907200000000},"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":[[1998,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    During a surveillance study to determine the relative prevalence of capsular types of\n                    <jats:italic toggle=\"yes\">Streptococcus pneumoniae<\/jats:italic>\n                    and antimicrobial susceptibility of invasive isolates in children &lt;5 years old in Mexico City, 220 isolates were collected. The serotype 23F was the most common found, followed by types 6A + B, 14, 19F, and 19A. Diminished susceptibility to penicillin was detected in 106 isolates (48.2%), and high penicillin resistance was found in 49 strains (22.2%), 31 belonging to type 23F. Resistance was also observed to erythromycin (13.1%), to chloramphenicol (43.1%), and to cefotaxime (10.9%). No strains were resistant to ofloxacin or vancomycin. Forty-four of the highly penicillin resistant isolates (penicillin MIC \u22652.0 \u03bcg\/ml) were examined with molecular fingerprinting techniques; 29 (65.9%) of these isolates (all except two strains) were serotype 23F and shared subtype variants of PFGE type A characteristic of the internationally spread Spanish\/USA clone of\n                    <jats:italic toggle=\"yes\">S. pneumoniae<\/jats:italic>\n                    . These strains were also resistant to trimethoprim\/sulfametoxasole (TMP\/SMX), chloramphenicol, and tetracycline, and most of them were susceptible to erythromycin. Another 6 of the highly penicillin-resistant strains (serogroups 9 and 14) showed PFGE fingerprints and antimicrobial susceptibility pattern characteristic of a second internationally spread clone (French\/Spanish clone) and carried resistance to penicillin and TMP\/SMX. The rest of the 9 penicillin-resistant isolates were represented by 7 distinct additional PFGE types. The findings suggest that almost 80% of all highly penicillin resistant strains may have been \"imported\" into Mexico.\n                  <\/jats:p>","DOI":"10.1089\/mdr.1998.4.241","type":"journal-article","created":{"date-parts":[[2009,1,29]],"date-time":"2009-01-29T12:47:30Z","timestamp":1233233250000},"page":"241-246","source":"Crossref","is-referenced-by-count":12,"title":["Predominance of the Multiresistant 23F International Clone of\n                    <i>Streptococcus pneumoniae<\/i>\n                    among Isolates from Mexico"],"prefix":"10.1177","volume":"4","author":[{"given":"Gabriela","family":"ECH\u00c1NIZ-AVILES","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"MAR\u00cdA ELENA","family":"VEL\u00c1ZQUEZ-MEZA","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"MARIA NOEM\u00cd","family":"Carnalla-Barajas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Araceli","family":"SOTO-NOGUER\u00d3N","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JOS\u00c9 LUIS","family":"Di Fabio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fortino","family":"SOL\u00d3RZANO-SANTOS","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yolanda","family":"JIM\u00c9NEZ-TAPIA","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexander","family":"Tomasz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1998,10]]},"container-title":["Microbial Drug Resistance"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/mdr.1998.4.241","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/mdr.1998.4.241","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,2,10]],"date-time":"2026-02-10T18:13:31Z","timestamp":1770747211000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/full\/10.1089\/mdr.1998.4.241"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,10]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1998,10]]}},"alternative-id":["10.1089\/mdr.1998.4.241"],"URL":"https:\/\/doi.org\/10.1089\/mdr.1998.4.241","relation":{},"ISSN":["1076-6294","1931-8448"],"issn-type":[{"value":"1076-6294","type":"print"},{"value":"1931-8448","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,10]]}}}