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Pherotypes are driving genetic differentiation within Streptococcus pneumoniae.
Carrolo M, Pinto FR, Melo-Cristino J, Ramirez M. Carrolo M, et al. Among authors: ramirez m. BMC Microbiol. 2009 Sep 7;9:191. doi: 10.1186/1471-2180-9-191. BMC Microbiol. 2009. PMID: 19735561 Free PMC article.
Molecular epidemiology of penicillin-resistant Streptococcus pneumoniae isolates recovered in Italy from 1993 to 1996.
Marchese A, Ramirez M, Schito GC, Tomasz A. Marchese A, et al. Among authors: ramirez m. J Clin Microbiol. 1998 Oct;36(10):2944-9. doi: 10.1128/JCM.36.10.2944-2949.1998. J Clin Microbiol. 1998. PMID: 9738048 Free PMC article.
Prophage carriage as a molecular epidemiological marker in Streptococcus pneumoniae.
Severina E, Ramirez M, Tomasz A. Severina E, et al. Among authors: ramirez m. J Clin Microbiol. 1999 Oct;37(10):3308-15. doi: 10.1128/JCM.37.10.3308-3315.1999. J Clin Microbiol. 1999. PMID: 10488197 Free PMC article.
The great majority of clinical isolates of Streptococcus pneumoniae carry prophages that may be identified through their hybridization with a DNA probe specific for the pneumococcal lytA gene (M. Ramirez, E. Severina, and A. Tomasz, J. Bacteriol. 181:3618-3625, 1999 …
The great majority of clinical isolates of Streptococcus pneumoniae carry prophages that may be identified through their hybridization with …
Streptococcus pneumoniae isolates with reduced susceptibility to ciprofloxacin in Spain: clonal diversity and appearance of ciprofloxacin-resistant epidemic clones.
Alou L, Ramirez M, García-Rey C, Prieto J, de Lencastre H. Alou L, et al. Among authors: ramirez m. Antimicrob Agents Chemother. 2001 Oct;45(10):2955-7. doi: 10.1128/AAC.45.10.2955-2957.2001. Antimicrob Agents Chemother. 2001. PMID: 11557501 Free PMC article.
Macrolide resistance in Streptococcus pneumoniae isolated from patients with community-acquired lower respiratory tract infections in Portugal: results of a 3-year (1999-2001) multicenter surveillance study.
Melo-Cristino J, Ramirez M, Serrano N, Hänscheid T; Portuguese Surveillance Group for the Study of Respiratory Pathogens. Melo-Cristino J, et al. Among authors: ramirez m. Microb Drug Resist. 2003 Spring;9(1):73-80. doi: 10.1089/107662903764736364. Microb Drug Resist. 2003. PMID: 12705685 Clinical Trial.
The M phenotype was seen in 19.6% isolates and these had MIC90 values of 8 mg/L for erythromycin and clarithromycin, and of 12 mg/L for azithromycin. ...
The M phenotype was seen in 19.6% isolates and these had MIC90 values of 8 mg/L for erythromycin and clarithromycin, and of 12 mg/L f …
Serotyping Streptococcus pneumoniae by multiplex PCR.
Brito DA, Ramirez M, de Lencastre H. Brito DA, et al. Among authors: ramirez m. J Clin Microbiol. 2003 Jun;41(6):2378-84. doi: 10.1128/jcm.41.6.2378-2384.2003. J Clin Microbiol. 2003. PMID: 12791852 Free PMC article.
Invasive Streptococcus pneumoniae from Portugal: implications for vaccination and antimicrobial therapy.
Serrano I, Ramirez M, Melo-Cristino J; Portuguese Surveillance Group for the Study of Respiratory Pathogens. Serrano I, et al. Among authors: ramirez m. Clin Microbiol Infect. 2004 Jul;10(7):652-6. doi: 10.1111/j.1469-0691.2004.00869.x. Clin Microbiol Infect. 2004. PMID: 15214879
Characterization of the genetic lineages responsible for pneumococcal invasive disease in Portugal.
Serrano I, Melo-Cristino J, Carriço JA, Ramirez M. Serrano I, et al. Among authors: ramirez m. J Clin Microbiol. 2005 Apr;43(4):1706-15. doi: 10.1128/JCM.43.4.1706-1715.2005. J Clin Microbiol. 2005. PMID: 15814989 Free PMC article.
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