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Ledermann W.,Hospital Luis Calvo Mackenna
Revista Chilena de Infectologia | Year: 2013

The history of antibiotics begins with the first observations of Pasteur and Joubert about microbial antagonism at the end of the XIX century. Three types of antagonism were studied: bacterial killing by other bacteria, virus against bacteria and blockade of cellular receptors by bacterial filtrates. In the first type, the piocianase from Pseudomonas aeruginosa and the activity of Bacillus subtilis over Mycobacterium tuberculosis were the better examples; in the second, the French D'Herelle was a pioneer using bacteriophages against Shigella dysenteriae; and another French, Besredka, headed the third line with his "antivirus thérapie" on Staphylococcus aureus. Source


Isabel Fuentealba T.,Hospital Luis Calvo Mackenna
Revista Chilena de Enfermedades Respiratorias | Year: 2012

Ultrasound is an alternative technique for the examination of the chest. Recently chest ultrasound has expanded its use mainly on the study of pediatric patients, since it does not use radiation and it is considered by some authors as the first line test in the evaluation of some specific conditions like: superficial lumps and bumps of the chest wall, diaphragm motility, thymus characterization and pleural effusions. The purpose of this paper is to review the main indications for pediatric chest ultrasound in non-cardiac diseases. Source


Nucci M.,Federal University of Rio de Janeiro | Queiroz-Telles F.,Federal University of Parana | Alvarado-Matute T.,Hospital Escuela | Tiraboschi I.N.,Hospital de Clinicas Jose de San Martin | And 8 more authors.
PLoS ONE | Year: 2013

Background: The epidemiology of candidemia varies depending on the geographic region. Little is known about the epidemiology of candidemia in Latin America. Methods: We conducted a 24-month laboratory-based survey of candidemia in 20 centers of seven Latin American countries. Incidence rates were calculated and the epidemiology of candidemia was characterized. Results: Among 672 episodes of candidemia, 297 (44.2%) occurred in children (23.7% younger than 1 year), 36.2% in adults between 19 and 60 years old and 19.6% in elderly patients. The overall incidence was 1.18 cases per 1,000 admissions, and varied across countries, with the highest incidence in Colombia and the lowest in Chile. Candida albicans (37.6%), C. parapsilosis (26.5%) and C. tropicalis (17.6%) were the leading agents, with great variability in species distribution in the different countries. Most isolates were highly susceptible to fluconazole, voriconazole, amphotericin B and anidulafungin. Fluconazole was the most frequent agent used as primary treatment (65.8%), and the overall 30-day survival was 59.3%. Conclusions: This first large epidemiologic study of candidemia in Latin America showed a high incidence of candidemia, high percentage of children, typical species distribution, with C. albicans, C. parapsilosis and C. tropicalis accounting for the majority of episodes, and low resistance rates. © 2013 Nucci et al. Source


Cofre J.,Hospital Luis Calvo Mackenna
Revista Chilena de Infectologia | Year: 2016

Pertussis may cause death in neonates and very young infants. In these ages pertussis vaccine has not been administered yet or infants haven’t received enough doses of vaccine to protect them. Cocoon strategy have been implemented in several countries and has limited efficacy because of low coverage among households. In vaccinated pregnant women transplacental transfer of pertussis antibodies starts at 32-34 weeks of pregnancy. United Kingdom, The United States of America and afterward other countries in Europe and America have adopted this strategy. Recent British research about security and effectiveness of pertussis vaccination in pregnant women to reduce pertussis incidence and fatality cases in neonate and very young infants infant support this strategy despite the fact that controlled studies about the efficacy and security in mothers and neonates have not been published. Several studies still not published or in progress are trying to answer these two questions and to evaluate possible interference between transplacentaly transferred pertussis antibodies and infants immune response to routine vaccines. Recently WHO has recommended pertussis vaccination during pregnancy in countries where neonatal pertussis is a public health problem. Nowadays, Chilean experts discuss if pertussis vaccination of pregnant women must be adopted in our country. © 2016, Sociedad Chilena de Infectologia. All Rights Reserved. Source


Ledermann W.,Hospital Luis Calvo Mackenna
Revista Chilena de Infectologia | Year: 2014

In 1902, being Chile a country free of yellow fever, the British steamship Oropesa arrived from Rio de Janeiro with three passengers suffering this disease. Captain Hayes rejected the quarantine imposed by the local Junta of Sanity in Punta Arenas and also in Coronel, following his journey with the sick passengers to Valparaíso, port where he accepted a brief quarantine and medical services for the most compromised of the three patients, who unfortunately died. The knowledge about yellow fever and the applicable epidemiological measures in that time in Chile come to us through the sessions of the Superior Council of Public Hygiene. The threat that implicated the presence of the Oropesa in Chilean coasts is compared with the arrival of British pirates and corsairs in the colonial centuries, before the independence, announced with the alarm cry ¡charque (for Sharp) is coming to Coquimbo!. Source

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