Frequency of PRRS live vaccine virus (European and North American genotype) in vaccinated and non-vaccinated pigs submitted for respiratory tract diagnostics in North-Western Germany

The frequency of PRRSV corresponding to live vaccines and wild-type was determined in 902 pigs from North-Western Germany submitted for post-mortem examination. Overall, 18.5% of the samples were positive for the EU wild-type virus. EU genotype vaccine virus was detected in 1.3% and the NA genotype vaccine virus in 8.9% of all samples. The detection of the EU vaccine was significantly higher in pigs vaccinated with the corresponding vaccine (OR=9.4). Pigs vaccinated with NA genotype had significantly higher detection chances for the corresponding vaccine virus when compared to non-vaccinated animals (OR=3.34) animals, however, NA vaccine was also frequently detected in non-vaccinated pigs. Concluding, the dynamics of NA genotype vaccine and EU wild-type virus corresponds with studies on PRRSV spread in endemically infected herds. The potential of spontaneous spread of the NA genotype vaccine should be considered in the planning of eradication programs.

Antigenic and genetic variations in European and North American equine influenza virus strains (H3N8) isolated from 2006 to 2007

Equine influenza virus (EIV) surveillance is important in the management of equine influenza. It provides data on circulating and newly emerging strains for vaccine strain selection. To this end, antigenic characterisation by haemaggluttination inhibition (HI) assay and phylogenetic analysis was carried out on 28 EIV strains isolated in North America and Europe during 2006 and 2007. In the UK, 20 viruses were isolated from 28 nasopharyngeal swabs that tested positive by enzyme-linked immunosorbent assay. All except two of the UK viruses were characterised as members of the Florida sublineage with similarity to A/eq/Newmarket/5/03 (clade 2). One isolate, A/eq/Cheshire/1/06, was characterised as an American lineage strain similar to viruses isolated up to 10 years earlier. A second isolate, A/eq/Lincolnshire/1/07 was characterised as a member of the Florida sublineage (clade 1) with similarity to A/eq/Wisconsin/03. Furthermore, A/eq/Lincolnshire/1/06 was a member of the Florida sublineage (clade 2) by haemagglutinin (HA) gene sequence, but appeared to be a member of the Eurasian lineage by the non-structural gene (NS) sequence suggesting that reassortment had occurred. A/eq/Switzerland/P112/07 was characterised as a member of the Eurasian lineage, the first time since 2005 that isolation of a virus from this lineage has been reported. Seven viruses from North America were classified as members of the Florida sublineage (clade 1), similar to A/eq/Wisconsin/03. In conclusion, a variety of antigenically distinct EIVs continue to circulate worldwide. Florida sublineage clade 1 viruses appear to predominate in North America, clade 2 viruses in Europe.

Latin American women's experiences with medical abortion in settings where abortion is legally restricted.

El aborto está legalmente restringido en la mayoría de América Latina donde 95 % de los 4.4 millones de abortos que se realizan anualmente son inseguros. El aborto con medicamentos es el uso de una droga o una combinación de drogas para interrupir el embarazo. Mifepristona seguida de misoprostol constituye el regimen más efectivo y recomendado. En los lugares donde no está disponible la mifepristona, se utiiza misoprostol solo. El aborto con medicamentos ha transformado radicalmente la práctica del aborto a nivel mundial, y particularmente en los contextos legalmente restrictivos. En América Latina, desde hace más de dos décadas, las mujeres utilizan el misoprostol para autoinducirse abortos. Este artículo resume los hallazgos de una revisión bibliográfica sobre las experiencias de las mujeres con el aborto con medicamentos en países latinoamericanos donde el aborto voluntario es ilegal. Las experiencias personales de las mujeres con el aborto con medicamentos son diversas y varían según el contexto, la edad, la historia reproductiva, el nivel socioeconómico y el conocimiento acerca del aborto con medicamentos así como las circunstancias físicas, emocionales y sociales que rodean el embarazo. Pero fundamentalmente, las experiencias están determinadas por la posibilidad de las mujeres de acceder a: 1) un aborto clandestino realizado bajo supervisión médica, o 2) información completa y precisa acerca del aborto con medicamentos, Otros factores clave incluyen el acceso a recursos económicos y apoyo emocional. Las mujeres valoran la seguridad y efectividad del aborto con medicamentos así como la privacidad que ofrece y la posibilidad de tener cerca a su pareja, amiga/o, o persona de su confianza durante el proceso. Las mujeres perciben al aborto con medicamentos como menos doloroso, más fácil, más seguro, más práctico, menos costoso, más natural y menos traumático que otros métodos abortivos. Que sea auto-inducido y que evite el procedimiento quirúrgico también son señalados como ventajas. Las principales desventajas identificadas son que es doloroso y que lleva tiempo para que se complete. Otros aspectos evaluados negativamente incluyen los efectos secundarios, el sangrado prolongado, la posibilidad de que no sea efectivo, y el hecho de que algunas mujeres eventualmente deban solicitar atención médica en una institución donde sean sancionadas por haberse practicado un aborto y hasta denunciadas a la policía.

JETRO and Japan's Postwar Export Promotion System: Messages for Latin American Export Promotion Agencies

This paper tries to explain how the Japanese postwar export promotion system worked and what kind of roles JETRO played in this system. Two case studies of JETRO's successful export promotion activities were also introduced. The paper also points out the themes to be solved by the TPO (Trade Promotion Organizations). Finally the paper shows four advices for Latin American Export Promotion Agencies, based upon JETRO's postwar experiences.

The determinants of the quality of Sales-Marketing Interface in a Multinational Customer Brand Focused Company: The Latin American Branches

Customer evolution and changes in consumers, determine the fact that the quality of the interface between marketing and sales may represent a true competitive advantage for the firm. Building on multidimensional theoretical and empirical models developed in Europe and on social network analysis, the organizational interface between the marketing and sales departments of a multinational high-growth company with operations in Argentina, Uruguay and Paraguay is studied. Both, attitudinal and social network measures of information exchange are used to make operational the nature and quality of the interface and its impact on performance. Results show the existence of a positive relationship of formalization, joint planning, teamwork, trust and information transfer on interface quality, as well as a positive relationship between interface quality and business performance. We conclude that efficient design and organizational management of the exchange network are essential for the successful performance of consumer goods companies that seek to develop distinctive capabilities to adapt to markets that experience vertiginous changes

Theoretical and experimental structural studies of historical Latin-American laminated planked timber arches

This article describes a first group of theoretical and experimental works undertaken at the Polytechnic University of Madrid. One major purpose is to obtain a structural model for the assessment of historical Latin-American vertically laminated planked timber arches built by the Spanish, mainly in the XVII and XVIII centuries. Many of those constructions still stand and represent a notable historical heritage. Pedro Hurtado recently presented his Ph. D. thesis on historical and construction topics. A structural study was then undertaken. This step of the structural research focussed on static analysis, most especially the deformation in the connection system. This article describes part of this first structural research. Even though it is still at a basic level, it shows reasonable agreement with the experimental results. Further static analytical models are been now developed and implemented. The next stage will address the dynamic problem, even though improvements will be made also in the constitutive equations.

Dealing with traffic risk in Latin American toll roads

Análisis de los sistemas de mitigación del riesgo de tráfico en autopistas de peaje en diferentes países de Latinoamérica. This paper presents a cross-country analysis of traffic risk allocation in road concessions of Latin America. It shows that some countries such as Chile, Colombia, and Peru have been greatly concerned with mitigating traffic risk, either by putting into practice public guarantees, implementing flexible term concessions, or through availability payment concessions; whereas other countries such as Mexico and Brazil have assigned traffic risk to the private concessionaire by using fixed-term concession contracts without any traffic guarantees. Based on an analysis of data from 1990 to 2010, the paper finds that shifting traffic risk from the concessionaire to the government or users was not confined to the riskiest projects, as one might expect. The analysis also suggests that the implementation of traffic risk mitigation mechanisms in Latin American toll roads has not been very successful in reducing renegotiation rates or in increasing the number of bidders in the tenders

Pozzuolanic properties of the natural zeolites of some latin american deposits

This paper shows the results of the study of physical, mechanic and chemical behaviour of some natural zeolite types sampled in different outcrops of the world, mainly from Mexico, Cuba and Spain, as well as their incidence in certain practical applications, by means of the utilization of its pozzuolanic properties. Results emphasize that every natural zeolite variety gives different answers in the assays, probably influenced by the subtle variability of their chemical composition. Key words: zeolites, pozzuolanic, density, geometric, strength

Low major histocompatibility complex class II diversity in European and North American moose.

Major histocompatibility complex (MHC) genes encode cell surface proteins whose function is to bind and present intracellularly processed peptides to T lymphocytes of the immune system. Extensive MHC diversity has been documented in many species and is maintained by some form of balancing selection. We report here that both European and North American populations of moose (Alces alces) exhibit very low levels of genetic diversity at an expressed MHC class II DRB locus. The observed polymorphism was restricted to six amino acid substitutions, all in the peptide binding site, and four of these were shared between continents. The data imply that the moose have lost MHC diversity in a population bottleneck, prior to the divergence of the Old and New World subspecies. Sequence analysis of mtDNA showed that the two subspecies diverged at least 100,000 years ago. Thus, viable moose populations with very restricted MHC diversity have been maintained for a long period of time. Both positive selection for polymorphism and intraexonic recombination have contributed to the generation of MHC diversity after the putative bottleneck.