South Central Chile
Mostrando 25-34 de 34 artigos, teses e dissertações.
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25. Three-Year Assessment of Methicillin-Resistant Staphylococcus aureus Clones in Latin America from 1996 to 1998
Four hundred ninety-nine methicillin-resistant Staphylococcus aureus (MRSA) isolates recovered from 1996 to 1998 from 22 hospitals in five countries of Latin America—Argentina, Brazil, Chile, Uruguay and Mexico—were examined for antimicrobial susceptibility and clonal type in order to define the endemic clones in those hospitals. The hybridization of Cla
American Society for Microbiology.
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26. Identification of a Novel Methicillin-Resistant Staphylococcus aureus Epidemic Clone in Córdoba, Argentina, Involved in Nosocomial Infections
Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) are increasingly a main health concern worldwide for hospitalized patients. In addition, the prevalence of community-acquired infection has risen continuously during the last few years. Some MRSA clones spread easier than others within the hospital environment and therefore are frequentl
American Society for Microbiology.
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27. Penicillinase producing Neisseria gonorrhoeae in Zurich, Switzerland.
Of 1031 consecutive isolates of Neisseria gonorrhoeae examined before 31 July 1982, 30 strains showed beta-lactamase activity. All the penicillinase producing N gonorrhoeae (PPNG) strains were imported, 23 of them from South East Asia. One PPNG strain was identified as coming from Antigua and one from Chile, the first PPNG strains to be reported from these t
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28. Phylogenetic subtypes of human T-lymphotropic virus type I and their relations to the anthropological background.
Isolates of human T-lymphotropic virus type I (HTLV-I) were phylogenetically analyzed from native inhabitants in India and South America (Colombia and Chile) and from Ainu (regarded as pure Japanese descendants from the preagricultural "Jomon" period). Their genomes were partially sequenced together with isolates from Gabon in central Africa and from Ghana i
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29. Colonization of the Americas by Drosophila Subobscura: Lethal-Gene Allelism and Association with Chromosomal Arrangements
Drosophila subobscura is a Palearctic species that has recently colonized the Americas. It was first found in 1978 in Puerto Montt, Chile, and in 1982 in Port Townsend, WA. The colonization and rapid expansion of the species in western South and North America provides distinctive opportunities for investigating the process of evolution in action. The inversi
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30. Evaluation of Recombinant Antigens for Serodiagnosis of Chagas’ Disease in South and Central America
The commercially available diagnostic tests for Chagas’ disease employ whole extracts or semipurified fractions of Trypanosoma cruzi epimastigotes. Considerable variation in the reproducibility and reliability of these tests has been reported by different research laboratories, mainly due to cross-reactivity with other pathogens and standardization of the
American Society for Microbiology.
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31. Analysis of Hantavirus Genetic Diversity in Argentina: S Segment-Derived Phylogeny
Nucleotide sequences were determined for the complete S genome segments of the six distinct hantavirus genotypes from Argentina and for two cell culture-isolated Andes virus strains from Chile. Phylogenetic analysis indicates that, although divergent from each other, all Argentinian hantavirus genotypes group together and form a novel phylogenetic clade with
American Society for Microbiology.
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32. Demography and population dynamics of the mouse opossum (Thylamys elegans) in semi-arid Chile: seasonality, feedback structure and climate.
Here we present, to the authors' knowledge for the very first time for a small marsupial, a thorough analysis of the demography and population dynamics of the mouse opossum (Thylamys elegans) in western South America. We test the relative importance of feedback structure and climatic factors (rainfall and the Southern Oscillation Index) in explaining the tem
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33. Pristine soils mineralize 3-chlorobenzoate and 2,4-dichlorophenoxyacetate via different microbial populations.
Biodegradation of two chlorinated aromatic compounds was found to be a common capability of the microorganisms found in the soils of undisturbed, pristine ecosystems. We used 2,4-dichlorophenoxyacetate (2,4-D) and 3-chlorobenzoate (3CBA) as enrichment substrates to compare populations of degrading bacteria from six different regions making up two ecosystems.
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34. Genetic Diversity of Clinical and Environmental Isolates of Vibrio cholerae Determined by Amplified Fragment Length Polymorphism Fingerprinting
Vibrio cholerae, the causative agent of major epidemics of diarrheal disease in Bangladesh, South America, Southeastern Asia, and Africa, was isolated from clinical samples and from aquatic environments during and between epidemics over the past 20 years. To determine the evolutionary relationships and molecular diversity of these strains, in order to unders
American Society for Microbiology.