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Con ayuda de la teoría de los costos de transacción, este estudio evalúa la manera como los hospitales de tercer nivel de Bogotá seleccionan las formas de contratación con las empresas promotoras de salud. Para la prueba empírica se usan los aportes teóricos de Williamson. Las variables independientes se especifican mediante escalas Likert y las hipótesis se prueban con el método estocástico de análisis de aceptabilidad (SMAA) y el análisis discriminante múltiple (ADM). El resultado principal es que las empresas promotoras de salud y los hospitales de tercer nivel en Bogotá buscan reducir los costos de producción mientras que los costos de transacción no son relevantes en la decisión.

Entrevista a Guillermo Ulriksen Becker sobre el Plan Constructivo La Serena – Coquimbo, en 1952./ Interview with Gulliermo B. Ulriksen on the Development Plan of La Serena/Coquimbo (Chile), in 1952.

This paper analyses the prenatal representations on motherhood of 15 Spanish primiparous women who were in the dilemma of whether or not to continue with their pregnancies. Based on a qualitative methodological approach, semi-structured interviews were carried out which included in their design theoretical approaches of the so-called Maternal Constellation of Daniel Stern (1997). Through a content analysis of the interviews, an absence of mental representations of the baby in terms of both physical and characterological appearance was found in the sample, possibly due to the emotional impact generated by the news of the pregnancy. This absence of representations of the baby would reveal the importance of support and/or accompaniment by social and health care providers. It would also reveal the importance of the law in force maintaining the time for reflection, which, implemented with personalised, face-to-face and verbal counselling, would allow women who find themselves in this situation to choose freely, by providing them with all the information on alternatives for continuing their pregnancy with support and accompaniment.

The importance of surveilling the circulation of the influenza virus and timely vaccination of different populations in Peru was analyzed in three sessions by a group of clinical experts from different specialties. The Peruvian national influenza surveillance system has many selected establishments that have become currently ineffective in terms of a timely report. Most of the samples come from Lima. The viral distribution is inadequately analyzed. The northern and jungle areas of the country have weather and season conditions different to those in Lima and on the southern highlands. This lack of coordination is accentuated by the opportunity of arrival of the influenza vaccine in the country. The Ministry of Health uses a trivalent vaccine but the possibility of a tetravalent vaccine with the two type-B lineages must be analyzed from a cost-benefit standpoint. The appropriateness of vaccinating two times a year, regionally, should be assessed.

Human metapneumovirus is a newly discovered pathogen associated with respiratory disease and occurring mainly in children. It produces an acute viral respiratory disease picture that varies from mild disease to severe, and which can require strict surveillance in intensive care units. Currently, reverse transcriptase polymerase chain reaction and cell culture are the most common methods for its diagnosis. The first six cases of human metapneumovirus in Colombia are presented from Medellín.

We describe an acute febrile respiratory infection outbreak in a military unit in Trujillo, Peru. Cases were identified using the influenza like illness (ILI) definition of the Ministry of Health. Nasal swab samples used for a rapid influenza test (RIT) and pharyngeal swab samples for viral isolation were taken. For influenza A, genotyping of a partial sequence of the hemagglutinin region was performed. The rate attack was 82.9%. Fifty-nine cases appeared between April 1 and 8, 2008; 58 came from the military unit (MU) #1 and one from the MU #2. The RIT identified 40 cases of influenza A and 43 cases were confirmed through cell culture. Isolations were genetically similar to the A H1N1 Brisbane strain. Early detection of outbreaks in confined locations such as military bases permits immediate action in preventing disease propagation.