Now showing items 1-20 of 24

    • Apparent lack of evidence on selected infectious agents in wild Yellow-naped Amazon parrots: implications for releasing attempts 

      Dolz, Gaby; Blanco-Peña, Kinndle; Niehaus, Carmen; Salinas, Alejandro; Jiménez-Soto, Mauricio (Universidad Nacional, Costa Rica, 2015-05-09)
      Blood and feather samples, as well as oropharyngeal and cloacal swabs, were collected from nine free-ranging Amazona auropalliata between January and May 2009 in two highly modified landscapes in northern Costa Rica. ...
    • Brucella abortus uses a stealthy strategy to avoid activation of the innate immune system during the onset of infection 

      BARQUERO-CALVO, ELIAS; Chaves-Olarte, Esteban; Weiss, David; Guzman-Verri, Caterina; Chacón-Díaz, Carlos; Rucavado, Alexandra; Moriyon, Ignacio; Moreno, Edgardo (PLOS ONE, 2007-07-18)
      Background. To unravel the strategy by which Brucella abortus establishes chronic infections, we explored its early interaction with innate immunity. Methodology/Principal Findings. Brucella did not induce proinflammatory ...
    • Brucella neotomae infection in humans, Costa Rica 

      BARQUERO-CALVO, ELIAS; Baker, Kate S.; Amuy, Ernesto; Chaves-Olarte, Esteban; Thomson, Nicholas R.; Moreno, Edgardo; Guzman-Verri, Caterina; Suárez-Esquivel, Marcela; Ruiz-Villalobos, Nazareth; Jiménez-Rojas, César; Chacón-Díaz, Carlos; Víquez-Ruiz, Eunice; Rojas-Campos, Norman; Oviedo-Sánchez, Gerardo (Emerging Infectious Diseases, 2017-06)
      Several species of Brucella are known to be zoonotic, but B. neotomae infection has been thought to be limited to wood rats. In 2008 and 2011, however, B. neotomae was isolated from cerebrospinal fluid of 2 men with ...
    • Characterization of a recent malaria outbreak in the autonomous indigenous region of Guna Yala, Panama 

      Calzada, José E; Marquez, Ricardo; Rigg, Chystrie; De La Cruz, Manuel; Chaves, Luis F; Cáceres, Lorenzo (BioMed Central, 2015-11-17)
      Background: This study aims to describe the epidemiological and entomological factors associated with a recent malaria outbreak that occurred in 2012 in a socially marginalized population from Guna Yala Comarca in Panama. ...
    • Chromobacterium violaceum infection in a free ranging howler monkey in Costa Rica 

      Baldi, Mario; Morales, Juan Alberto; Hernandez, Giovanna; Jiménez-Soto, Mauricio; Alfaro-Alarcón, Alejandro; BARQUERO-CALVO, ELIAS (Wildlife Disease Association, 2010)
      Chromobacterium violaceum is a gram-negative saprobe bacterium that is a rare opportunistic pathogen in mammals. There are numerous reports in humans including fatalities, but no record exists in free-ranging nonhuman ...
    • Climatic fuctuations and malaria transmission dynamics, prior to elimination, in Guna Yala, República de Panamá 

      Amarilis Hurtado, Lisbeth; Calzada, José E.; Rigg, Chystrie A.; Castillo, Milagros; Chaves, Luis Fernando (BioMed Central, 2018-02-20)
      Background: Malaria has historically been entrenched in indigenous populations of the República de Panamá. This scenario occurs despite the fact that successful methods for malaria elimination were developed during the ...
    • Detección de anticuerpos a Neospora caninum en perros de las zonas urbana, peri urbana y rural del valle central de Costa Rica 

      Palavicini López, Paola; Hidalgo Jara, Warren; Dolz, Gaby; ROMERO-ZUÑIGA, JUAN JOSÉ; Jiménez Rocha, Ana Eugenia (Universidad Nacional, Costa Rica, 2006-12-01)
      To describe some traits of neosporosis in Costa Rican dogs, a cross sectional study was carried out to determine the presence/absence of N. caninum antibodies. Eighty nine dogs from dairy farms, 65 kennel dogs and 94 from ...
    • Detección de IHHNV en el cultivo de Litopenaeus vannamei en Costa Rica 

      Parajeles, Jose; Solorzano-Morales, Antony; Dolz, Gaby; Peña Navarro, Nelson (Universidad de Costa Rica, 2021-05-01)
      Introducción. El virus de la necrosis hipodérmica y hematopoyética infecciosa (IHHNV) produce deformidades cuticulares y reducción del crecimiento del camarón blanco (Litopenaeus vannamei), lo que genera ...
    • Efecto del estatus serológico al virus de la leucosis enzoótica bovina (BLV) sobre la producción de leche en hatos lecheros de Costa Rica 

      Dolz, Gaby; Romero-Zúñiga, Juan José; Dávila, Gerardo; Beita, Keren Gabriela (Universidad Nacional, Costa Rica, 2012-09-02)
      Se realizó un estudio longitudinal para determinar el efecto del estatus serológico al virus de la leucosis enzoótica bovina (BLV) sobre la producción de leche en hatos lecheros especializados de Costa Rica. Se analizó ...
    • Effects of local and regional climatic fluctuations on dengue outbreaks in southern Taiwan 

      Chuang, Ting-Wu; Chaves, Luis Fernando; Po-Jiang, Chen (PLOS ONE, 2017-06-02)
      Background: Southern Taiwan has been a hotspot for dengue fever transmission since 1998. During 2014 and 2015, Taiwan experienced unprecedented dengue outbreaks and the causes are poorly understood. This study aims to ...
    • Ehrlichiosis y anaplasmosis en Costa Rica 

      Ábrego, Leyda; Romero, Luis E.; Campos-Calderón, Liliana; Bouza-Mora, Laura; Dolz, Gaby; Jiménez Rocha, Ana Eugenia (Colegio de Médicos y Cirujanos de Costa Rica, 2013-07)
      La ehrlichiosis y la anaplasmosis son enfermedades infecciosas producidas por bacterias de la familia Anaplasmataceae y transmitidas por garrapatas. Ambas afectan, entre otras especies, al hombre, ocasionando sintomatología ...
    • Evaluación del diagnóstico de Ehrlichia canis mediante frotis sanguíneo y técnica molecular en perros de Costa Rica 

      Romero Pérez, Luis Ernesto; Meneses Guevara, Ana; Jiménez Soto, Mauricio; Salazar Sánchez, Lizbeth; Dolz, Gaby; ROMERO-ZUÑIGA, JUAN JOSÉ (Universidad Nacional, Costa Rica, 2013-11-20)
      El objetivo de este trabajo fue comparar los resultados del diagnóstico de Ehrlichia canis, mediante frotis sanguíneo y técnica de reacción en cadena de la polimerasa, (PCR, Polymerase Chain Reaction, por sus siglas en ...
    • First isolation and molecular characterization of Ehrlichia canis in Costa Rica, Central America 

      Romero, L. E.; Salazar, L.; Aguiar, D. M.; Labruna, M. B.; Meneses Guevara, Ana Isabel; Jiménez Soto, Mauricio; ROMERO-ZUÑIGA, JUAN JOSÉ; Dolz, Gaby (Elsevier B.V, 2010-07-23)
      The present study investigated Ehrlichia species in blood samples from dogs suspected of clinical ehrlichiosis, using molecular and isolation techniques in cell culture. From a total of 310 canine blood samples analyzed ...
    • Human Brucella melitensis infections in southern Vietnam 

      Campbell, J.I.; Lan, Nguyen Thi; Phuong, P.M.; Chau, L.B.; Pham, Trung Duc; Guzman-Verri, Caterina; Ruiz-Villalobos, Nazareth; Minh, T.P.T.; Muñoz Bruque, Álvaro; Moreno, Edgardo; Thwaites, G.E.; Rabaa, M.A.; Chau, N.V.V.; Bake, S. (European Society of Clinical Microbiology and Infectious Diseases, 2017-06-29)
      Brucellosis is a collective term for infections caused by small Gram-negative coccobacilli belonging to genus Brucella. This genus incorporates the well-described animal pathogens Brucella melitensis, Brucella abortus, ...
    • Molecular characterization of Trypanosoma cruzi and infection rate of the vector Triatoma dimidiate in Costa Rica 

      Zeledón, Rodrigo; Zuriaga, María Ángeles; Blandón-Naranjo, Melissa; Valerio-Campos, Idalia; Salas, Ruth; BARGUES, MARIA DOLORES (Universidad Nacional, Costa Rica, 2012-06-30)
      According to the genetic characterization by the analysis of the miniexon gene, strains of Trypanosoma cruzi can be classified into six discrete typing units (DTUs), and the DTU 1 into four distinct genotypes associated ...
    • Paratuberculosis 

      Dolz, Gaby (Camara Nacional de Productores de Leche, 2016-09-29)
      La paratuberculosis o enfermedad de Johne es una enfermedad incurable de los rumiantes, ocasionada por una bacteria denominada Mycobacterium aviun subespecie paratuberculosis o MAP. Esta bacteria ocasiona una enteritis ...
    • Serological detection of viral infections in captive wild cats from Costa Rica 

      Blanco-Peña, Kinndle; Peña, Roberto; Hernández, Carmen; Jiménez-Soto, Mauricio; Nazario Araya, Luis; Romero-Zúñiga, Juan José; Dolz, Gaby (Veterinary Medicine International, 2011-02-08)
      Serum samples from a total of 44 wildcats, 28 margays (Leopardus wiedii), 10 ocelots (Leopardus pardalis), four jaguaroundis (Herpailurus yaguaroundi), one oncilla (Leopardus tigrina), and one jaguar (Panthera onca) were ...
    • Seroprevalence and prevalence of Babesia vogeli in clinically healthy dogs and their ticks in Costa Rica 

      Dolz, Gaby; García‑Quesada, Andrea; Jiménez Rocha, Ana Eugenia; Romero-Zúñiga, Juan José (Universidad Nacional, Costa Rica, 2021-09-14)
      Canine babesiosis is a disease caused by a parasite of the genus Babesia which destroys red blood cells. Previous studies have shown the presence of Babesia vogeli in rural areas in Costa Rica using molecular techniques. ...
    • Seroprevalence of Viral Infections in Domestic Cats in Costa Rice 

      Dolz, Gaby; Jiménez Sánchez, Carlos; Cortéz Campos, María del Rocio; Prendas Gamboa, Jorge; Blanco-Peña, Kinndle (Universidad Nacional, Costa Rica, 2018-12-13)
      A cross-sectional survey of a convenient sample of domestic cats from Costa Rica’s greater metropolitan area was carried out to determine the prevalence of antibodies against feline herpesvirus type 1 (FHV-1), feline ...
    • Serosurveillance of infectious agents in equines of the Central Valley of Costa Rica 

      Jiménez, D.; ROMERO-ZUÑIGA, JUAN JOSÉ; Dolz, Gaby (Open Veterinary Journal, 2014-11-16)
      Blood samples from 181 equines from the Central Valley of Costa Rica were collected in the year 2012 to determine the presence of antibodies against selected infectious agents in horses and to determine the risk factors ...