Faculty Member Pamela Thomson



Assistant Prof. PAMELA THOMSON MORALES. Veterinarian. Master in Biological Sciences, Mention Microbiology. Doctor in Biomedical Sciences.


Dr. Thomson graduated as a Veterinary Doctor in 2002 and began her specialization in Microbiology and Mycology by completing a Master’s degree at the University of Chile, then she moved to Spain to continue with a Doctorate in Biomedicine at the Rovira i Virgili University.

She extended her research activities by undertaking a post doctorate at the Catholic University of Chile, focusing her work on the human gut microbiome. She perfected this knowledge with an internship in Valencia at the Foundation for the Promotion of Health and Biomedical Research (FISABIO).

Since 2020, she joined the Universidad Andrés Bello, where she participates as a teacher in undergraduate courses such as Aggression and Organic Defense, Zoonosis and Title Seminar. She coordinates courses on Clinical Microbiology, Food Safety and One Health Impact in Veterinary Medicine. She participates as a postgraduate teacher, forming part of the academic body of the Conservation Medicine Doctorate.

Additionally, she founded and is the present director of the the Clinical Microbiology and Microbiome laboratory, located at the “Avda Lo Pinto, Chicureo Colina” headquarters, where teaching, research and microbiological diagnosis activities are carried out, working directly with the veterinary clinical hospital.

She is a member of the Microbiology Society of Chile, a member of the International Microbiota Society. She is editor of Frontiers Veterinary Science, in the Animal Nutrition and Metabolism section and Editor of Frontiers in Microbiology, in the Microorganisms in Vertebrate Digestive Systems section, among others.

She recently started to collaborate with the Sporotrichosis group of the Mycotic Diseases Branch Teams of the Centers for Disease Control and Prevention (CDC) USA.



Veterinary Clinical Microbiology, Animal Microbiome, Antibiotic Resistance


-Fondecyt Iniciación # 11231174 2023 Metagenomic characterization of the antibiotic resistome and microbiome from samples obtained in healthy dogs and cats. Investigadora Responsable

-Evaluación del cambio en la composición, función y expresión génica del microbioma intestinal en perros, generados por el uso de diferentes grupos de antibióticos. Proyecto en ejecución: PAI #77190070. Investigadora Responsable.

-Detección del estado de portación de esporotricosis en garras de felinos provenientes de la ciudad de Santiago, Valdivia y Punta Arenas (IR: Pamela Fondos Científicos Purina 2023. Investigadora Responsable. (Co investigador: alumna Leslie Camila del Río)

-Genotypic characterization of clonal complexes of Staphylococcus spp. methicillin-resistant isolates from dogs, cats, and humans. Project in progress: Purina Scientific Funds 2022. Responsible Researcher

-Detection of strains of Staphylococcus spp. resistant to methicillin from dogs, cats and humans. Completed project: Purina Scientific Funds 2021. Responsible Researcher.

-Evaluation of the effect of sucralose on the composition and function of the intestinal microbiome in healthy subjects. Completed project: Fondecyt #3170609. Responsible researcher.


SEE SCIENTIFIC PUBLICATIONS AND PROFILE IN: Andrés Bello University Researchers Portal

Thomson, P., Carreño, N. & Núñez, A., 2023, Main mites associated with dermatopathies present in dogs and other members of the Canidae family: Open Veterinary Journal. 132p. 131-142 12 p.

Thomson, P., González, C., Blank, O., Ramírez, V., Río, C. D., Santibáñez, S. & Pena, P., feb. 2023, Sporotrichosis Outbreak Due to Sporothrix brasiliensis in Domestic Cats in Magallanes, Chile: A One-Health-Approach Study: Journal of Fungi. 92, 226.

Núñez, A. H., Hidalgo, F. G., Morales, P. C., Silva, V. E., Thomson, P. E. & Castro, R. A., 2022, Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile: Open Veterinary Journal. 121p. 99-104 6 p.

-Thomson P, Santibáñez R, Rodríguez-Salas C, Flores-Yañez C, Garrido D. Differences in the composition and predicted functions of the intestinal microbiome of obese and normal weight adult dogs. PeerJ. 2022 16;10: e12695.

-Lara F, Castro R, Thomson P. Changes in the gut microbiome and colic in horses: Are they causes or consequences? Open Vet J. 2022;12(2):242-249.

Thomson P, García P, Miles J, Isla D, Yáñez C, Santibáñez R, Núñez A, Flores-Yáñez C, Del Río C, Cuadra F. Isolation and Identification of Staphylococcus Species Obtained from Healthy Companion Animals and Humans. Vet Sci. 2022; 13;9(2):79.

-Santibáñez R, Lara F, Barros TM, Mardones E, Cuadra F, Thomson P. Ocular Microbiome in a Group of Clinically Healthy Horses. Animals (Basel). 2022 7;12(8):943.

-Núñez F P, Quera R, Bay C, Thomson P. Fecal microbiota transplant, its usefulness beyond Clostridioides difficile in gastrointestinal diseases. Gastroenterol Hepatol. 2022;45(3):223-230.

-Núñez AH, Hidalgo FG, Morales PC, Silva VE, Thomson PE, Castro RA. Antifungal susceptibility of Malassezia pachydermatis isolated from the external auditive conduct from dogs, in central Chile. Open Vet J. 2022;12(1):99-104.

-Santibáñez R, Rodríguez-Salas C, Flores-Yáñez C, Garrido D, Thomson P. Assessment of Changes in the Oral Microbiome That Occur in Dogs with Periodontal Disease. Vet Sci. 2021 27;8(12):291.

Thomson P, Núñez P, Quera R, Bay C. Gastrointestinal microbiome, what is behind faecal microbiota transplantation? New Microbes New Infect. 2021 13; 42:100898.

Thomson P, Lara P, Maier L, Ledesma P, López O, Moreira R. Detection of Helicobacter spp in the gastric mucosa of clinically healthy domestic felines by rapid urease test and histopathology. RIVEP 2020 31, 4, e19039.

-Medina DA, Li T, Thomson P, Artacho A, Pérez-Brocal V, Moya A. Cross-Regional View of Functional and Taxonomic Microbiota Composition in Obesity and Post-obesity. Treatment Shows Country Specific Microbial Contribution. Front Microbiol. 2019. 17; 10:2346.

Thomson P, Santibáñez R, Aguirre C, Galgani J, Garrido D. Short-Term Impact of Sucralose Consumption on the Metabolic Response and Gut Microbiome of Healthy Adults. 2019 Br J Nutr. 28;122(8):856-862.

-Ruiz A, Medina DA, Maier L, Thomson P. Dermatophytosis in domestic cats (Felis catus) positive to retrovirus. Rev RIVEP. 2019. 30; 2: 902-907.

-Pérez-Cantero A, Thomson P, Paredes K, Guarro J, Capilla J. Antifungal susceptibility of Saccharomyces cerevisiae and therapy in a murine model of disseminated infection. Rev Iberoam Micol. 2019; 36 (1):37-40.

Thomson P, Medina D. A., Ortuzar V, Gotteland M, Garrido G. Anti-inflammatory effect of microbial consortia during the consumption of dietary polysaccharides. Food Research Inter. 2018; 109: 14-23.

Thomson P. Monsalves P, Maier L, Rojas M. Dermatophyte colonization in rabbits kept in pet stores of Santiago of Chile. Rev. MVZ Córdoba. 2017; 22 (3):6334-6338.

-Medina DA, Pinto F, Ovalle A, Thomson P, Garrido D. Prebiotics Mediate Microbial Interactions in a Consortium of the Infant Gut Microbiome. Int J Mol Sci. 2017; 4;18 (10).

Thomson P, Medina DA, Garrido D. Human milk oligosaccharides and infant gut Bifidobacteria: Molecular strategies for their utilization. Food Microbiol (2018), doi: 10.1016/j.fm.2017.09.001

Thomson P, López-Fernández L, Guarro J, Capilla J. Virulence and antifungal therapy of murine disseminated infection by Rhodotorula mucilaginosa. Diagn Microbiol Infect Dis. 2017; 89(1):47-51.

Thomson P, Mayayo E, López-Fernández L, Guarro J, Capilla J. Combined antifungal therapy against systemic murine infections by rare Cryptococcus species. Mycoses. 2017;60 (2):112-117.

-Siqueira JPZ, Sutton DA, García D, Thomson P, Wiederhold N, Guarro J. Species diversity of Aspergillus section versicolores in clinical samples and antifungal susceptibility. Fungal Biol. 2016;120 (11):1458-1467

Thomson P, Guarro J, Mayayo E, Capilla J. Efficacy of posaconazole in a murine model of systemic infection by Saprochaete capitate. Antimicrob Agents Chemother. 2015; 59: 7477-7482.

Thomson P, Monsalves P, Maier L, Silva V. Dermatophyte colonization on guinea pigs (Cavia porcellus) kept in pet stores. First report from Santiago, Chile. Rev Iberoam Micol. 2015; 32: 103-105.

Thomson P, Martínez M. Clostridium difficile: an emerging pathogen in Veterinary Medicine. REDVET. 2012; 13: 3 11.

-Thomson P, Anticevic S, Rodríguez H, Silva V. Antifungal activity and safety profile of the natural product derived from ozonated marigold oil (AMO3) in dermatophytes. Rev. Chil. Infectol. 2011; 28: 512-519.

-Thomson P, Miranda Gabriel, Silva Víctor. Canine lymphadenitis caused by Cryptococcus neoformans. First case in Chile. Rev Iberoam Micol. 2006; 23: 238-240.

– Silva V, Thomson P, Maier L, Anticevic S. Infection and colonization by dermatophytes in canids from the southern area of Santiago, Chile. Rev Iberoam Micol. 2003; 20: 145-148.



-Pamela Thomson, Daniel Garrido. Chapter 5: Human milk oligosaccharides and health promotion through the gut microbiome. EN: Dairy in Human Health and Disease across the Lifespan. Editors Ronald Ross Watson, Robert J Collier, Victor Preedy. USA. 2017.

-Pamela Thomson. Subcutaneous and deep mycoses. IN: Topics of dermatology in small animals. Authors: Liliana Maier y María Calderón. Ediciones Universidad Santo Tomás.