Browsing by Author "O'Ryan Gallardo, Miguel"

Now showing items 1-20 of 62

    • A cross sectional study found differential risks for COVID-19 seropositivity amongst health care professionals ... 
      Zúñiga, Marcela; Lagomarcino, Anne Josephine; Muñoz, Sergio; Peña Alonso, Alfredo; Rodríguez, María Andrea; O'Ryan Gallardo, Miguel (Elsevier, 2022)
      Objective: Health care workers (HCWs) are at increased risk for SARS-CoV-2 infection, however not all face the same risk. We aimed to determine IgG/IgM prevalence and risk factors associated with seropositivity in Chilean ...
    • A third gyrovirus species in human faeces 
      Phan, Tung G.; Li, Linlin; O'Ryan Gallardo, Miguel; Cortes, Hector; Mamani, Nora; Bonkoungou, Isidore J.O.; Wang, Chunling; Leutenegger, Christian M.; Delwart, Eric (2012)
      Until 2011 the genus Gyrovirus in the family Circoviridae consisted of a single virus (Chicken anemia virus or CAV) causing a common immunosuppressive disease in chickens when a second gyrovirus (HGyV) was reported on the ...
    • Acquisition of serum isotype-specific and G type-specific antirotavirus antibodies among children in day ... 
      O'Ryan Gallardo, Miguel; Matson, David O.; Estes, Mary K.; Pickering, Larry K. (1994)
      The acquisition of serum antirotavirus antibodies among children in day care centers was monitored through two rotavirus seasons. Twenty-six children were monitored daily for diarrhea and weekly for stool rotavirus excretion ...
    • Admission clinical and laboratory factors associated with death in children with cancer during a febrile ... 
      Santolaya de Pablo, María Elena; Alvarez, Ana M.; Avilés, Carmen L.; Becker, Ana; Mosso, Claudio; O'Ryan Gallardo, Miguel; Payá, Ernesto; Salgado, Carmen; Silva, Pamela; Topelberg, Santiago; Tordecilla, Juan; Varas, Mónica; Villarroel, Milena; Viviani, Tamara; Zubieta, Marcela (2007)
      BACKGROUND: Early identification of children with cancer at risk for death during a febrile neutropenic (FN) episode may increase their possibility for survival. Our aim was to identify at the time of admission, clinical ...
    • Antigenic types of circulating rotavirus in children with acute diarrhea in Santiago de Chile Tipos antigénicos ... 
      O'Ryan Gallardo, Miguel; Mamani Mamani, Rodrigo Alejandro; Avendaño,; Cohen,; Peña,; Villarroel, Ana; Chávez,; Prado,; Valdivieso,; Kaltwasser, (1995)
      Protective immunity against rotavirus infection is directed against antigenic epitopes on the outer capsid proteins VP7 and VP4. The aim of this study was to characterize the VP7 and VP4 antigenic types circulating in ...
    • Chaperone-usher pili loci of colonization factor-negative human enterotoxigenic Escherichia coli 
      Del Canto, Felipe; O'Ryan Gallardo, Miguel; Pardo, Mirka; Torres, Alexia; Gutiérrez, Daniela; Cádiz, Leandro; Valdés, Raul; Mansilla, Aquiles; Martínez, Rodrigo; Hernández, Daniela; Caro, Benjamin; Levine, Myron M.; Rasko, David A.; Hill, Christopher M.; Pop, Mihai; Stine, O. Co (Frontiers Media S.A., 2017)
      © 2017 Del Canto, O'Ryan, Pardo, Torres, Gutiérrez, Cádiz, Valdés, Mansilla, Martínez, Hernández, Caro, Levine, Rasko, Hill, Pop, Stine and Vidal.Enterotoxigenic Escherichia coli (ETEC) is one of the most common causes of ...
    • Choosing policy instruments for controlling ozone depleting substances in a developing context: The case of Chile 
      O'Ryan Gallardo, Miguel; Ulloa, Andrés; Asencio, Gonzalo (ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2006-09)
      Chile ratified the Montreal Protocol in 1990 which sets out an agenda for the reduction and then elimination of ozone depleting substances (ODS); however, by 1998 the country had not yet defined a strategy to encourage ...
    • Coli surface antigen 26 acts as an adherence determinant of enterotoxigenic Escherichia coli and is ... 
      Cádiz, Leandro; Torres, Alexia; Valdés, Raúl; Vera, Gabriel; Gutiérrez, Daniela; Levine, Myron M.; Montero, David A.; O'Ryan Gallardo, Miguel; Rasko, David A.; Stine, O. Colin; Vidal, Roberto; Del Canto, Felipe (Frontiers Media S.A., 2018)
      Copyright © 2018 Cádiz, Torres, Valdés, Vera, Gutiérrez, Levine, Montero, O'Ryan, Rasko, Stine, Vidal and Del Canto. The coli surface antigen 26 (CS26) of enterotoxigenic Escherichia coli (ETEC) had been described as a ...
    • Computable general equilibrium model analysis of economywide cross effects of social and environmental ... 
      O'Ryan Gallardo, Miguel; Miguel, Carlos J. de; Miller Astete, Sebastián; Munasinghe, Mohan (ELSEVIER, 2005-09-15)
      The analysis of the linkages between development policies and social and environmental variables is a neglected area within the development literature. This paper focuses on the key interrelations among the economic, social ...
    • The current situation of meningococcal disease in Latin America and updated Global Meningococcal Initiative ... 
      Sáfadi, Marco Aurélio P.; O'Ryan Gallardo, Miguel; Valenzuela Bravo, María Teresa; Brandileone, María Cristina C.; Gorlad, María Cecília O.; Lemos, Ana Paula S. de; Moreno, Gabriela; Vázquez, Julio A.; López, Eduardo L.; Taha, Muhamed-Kheir; Borrow, Ray (Elsevier, 2015)
      The Global Meningococcal Initiative (GMI) was established in 2009 and comprises an international team of scientists, clinicians, and public health officials with expertise in meningococcal disease (MD). Its primary goal ...
    • Declaración del Comité Consultivo de Inmunizaciones de la Sociedad Chilena de Infectología respecto a la ... 
      Abarca Villaseca, Katia; Valenzuela Bravo, María Teresa; Vergara F., Rodrigo; Luchsinger Farías, Vivian; Muñoz M., Alma; Jiménez de la Jara, Jorge; Ripoll M., Erna; O'Ryan Gallardo, Miguel (SOC MEDICA SANTIAGO, 2008-11)
      This article briefly reviews the epidemiology of human papillomavirus (HPV) infection and associated diseases globally and in Chile, and the scientific information of the licensed HPV vaccines: Garadasil (R) and Cervarix ...
    • Declaración del Comité Consultivo de Inmunizaciones de la Sociedad Chilena de Infectología respecto de la ... 
      Abarca Villaseca, Katia; Valenzuela Bravo, María Teresa; Vergara F., Rodrigo; Luchsinger Farías, Vivian; Muñoz, Alma; Jiménez de la Jara, Jorge; Ripoll M., Erna; O'Ryan Gallardo, Miguel (Sociedad Médica de Chile, 2008-09)
      This article briefly reviews the epidemiology of human papillomavirus (HPV) infection and associated diseases globally and in Chile, and the scientific information of the licensed HPV vaccines: Garadasil (R) and Cervarix ...
    • Development and validation of a microarray for the confirmation and typing of norovirus RT-PCR products 
      Mattison, Kirsten; Corneau, Nathalie; Berg, Ingvild; Bosch, Albert; Duizer, Erwin; Gutiérrez-Aguirre, Ion; L'Homme, Yvan; Lucero, Yalda; Luo, Zhiyao; Martyres, Alexander; Myrmel, Mette; O'Ryan Gallardo, Miguel; Pagotto, Franco; Sano, Daisuke; Svraka, Sanela; Urzúa Tobar, Ulises; Bidawi (2011)
      Noroviruses are implicated in many worldwide institutional, food and waterborne outbreaks each year. Genetic typing of isolates is valuable for monitoring outbreak spread as well as variation in circulating strains. ...
    • Diagnosis of bacteremia in febrile neutropenic episodes in children with cancer: Microbiologic and molecular ... 
      Santolaya de Pablo, María Elena; Farfán, Mauricio J.; Maza León, Verónica de la; Cociña, Manuela; Santelices, Felipe; Alvarez, Ana M.; Avilés, Carmen L.; Becker, Ana; O'Ryan Gallardo, Miguel; Román, Paulina; Salgado, Carmen; Silva, Pamela; Topelberg, Santiago; Tordecilla, Juan; Varas, Mónica; Vi (Lippincott Williams and Wilkins, 2011)
      Background: Bacterial isolation using conventional microbiologic techniques rarely surpasses 25% in children with clinical and laboratory findings indicative of an invasive bacterial infection. The aim of this study was ...
    • Differential time to positivity and quantitative cultures for noninvasive diagnosis of catheter-related ... 
      Acuña, Mirta; O'Ryan Gallardo, Miguel; Cofré, José; Alvarez, Isabel; Benadof, Dona; Rodríguez, Pilar; Torres, María Teresa; Aguilera, Liliana; Santolaya de Pablo, María Elena (Lippincott Williams and Wilkins, 2008)
      Background: Accurate diagnosis of catheter-related blood stream infection (CRBSI) is necessary to make a decision about removal of the catheter. Differential time to positivity (DTP) and the ratio of quantitative cultures ...
    • Dr. Ruiz-Palacios and colleagues reply [5] 
      O'Ryan Gallardo, Miguel; Ruiz Palacios, Guillermo M.; Clemens, Ralf (2006)
    • Dynamics of Helicobacter pylori Detection in Stools During the First 5 Years of Life in Chile, a Rapidly ... 
      O'Ryan Gallardo, Miguel; Rabello, Marcela; Cortés, Hector; Lucero, Yalda; Peña, Alfredo; Torres Torretti, Juan Pablo (2013)
      Background: Helicobacter pylori colonization/infection can be transitory or persistent, conditions that have not been thoroughly evaluated in young children. We aimed to characterize the dynamics of H. pylori stool ...
    • Efficacy and safety of an oral live attenuated human rotavirus vaccine against rotavirus gastroenteritis ... 
      Linhares, Alexandre C.; Velázquez, F. Raúl; Pérez Schael, Irene; Sáez Llorens, Xavier; Abate, Héctor; Espinoza, Félix; López, Pío; Macías Parra, Mercedes; Ortega Barría, Eduardo; Rivera Medina, Doris Maribel; Rivera, Luis; Pavia Ruz, Noris; Núñez, Ernesto; Damaso, Silvia; Ruiz Palacios, Guillermo M.; De Vos, Béatrice; O'Ryan Gallardo, Miguel; Gillard, Paul; Bouckenooghe, Alain (ELSEVIER, 2008-04-05)
      Background Peak incidence of rotavirus gastroenteritis is seen in infants between 6 and 24 months of age. We therefore aimed to assess the 2-year efficacy and safety of an oral live attenuated human rotavirus vaccine for ...
    • Enteric viruses in wastewaters: An interesting approach to evaluate the potential impact of rotavirus ... 
      O'Ryan Gallardo, Miguel; Lucero, Yalda; Vidal, Roberto (2012)
      Rotavirus and norovirus are the leading causes of acute gastroenteritis worldwide. Both viruses share features such as low infectious dose, high stool concentration and prolonged survival in the environment, including ...
    • Enterovirus D68 Infection, Chile, Spring 2014 
      Torres Torretti, Juan Pablo; Farfán Urzúa, Mauricio; Izquierdo Copiz, Giannina; Piemonte, Paula; Henriquez, Juan; O'Ryan Gallardo, Miguel (Centers Disease Control, 2015)