• 1990-1992 – Fellowship in Infectious Diseases, Cleveland Clinic Foundation.
  • 1989 – Fellowship in Clinical Microbiology, Cleveland Clinic Foundation.
  • 1987 – Specialty in Internal Medicine, INNSZ.
  • 1981 – Surgeon, La Salle University.

Academic appointments:

  • Head of the Department of Infectious Diseases at the Salvador Zubirán National Institute of Medical Sciences and Nutrition (INCMNSZ).
  • Researcher in Medical Sciences “F” of the National Institutes of Health.
  • Professor of the sub-specialty on HIV / AIDS of the Faculty of Medicine at UNAM.
  • National System of Researchers, (SNI) Level III.
  • Member of the National Academy of Medicine.
  • Researcher affiliated with CISIDAT.

Research interests:

  • HIV treatment with antiretrovirals.
  • Epidemiology of HIV infection.
  • Late presentation to treatment in patients with HIV infection.
  • Antiretrovirals in the prevention of HIV infection.
  • Immune Reconstitution Syndrome.
  • Clinical aspects of infectious diseases.

Featured projects:

  • He has been participated in national and international clinical trial groups and has published as an author and co-author in various national and international journals on HIV/AIDS.


  • The Population Impact of Late Presentation with Advanced HIV Disease and Delayed Antiretroviral Therapy in Adults Receiving HIV Care in Latin America. Belaunzarán-Zamudio PF, Caro-Vega YN, Shepherd BE, Rebeiro PF, Crabtree-Ramírez BE, Cortes CP, Grinsztejn B, Gotuzzo E, Mejia F, Padgett D, Pape JW, Rouzier V, Veloso V, Cardoso SW, McGowan CC, Sierra-Madero JG. Am J Epidemiol. 2019 Oct 29.
  • III. The role of the research ethics committees in the regulation of pharma-sponsored studies. Aguilar-Salinas CA, Pascual-Ramos V, Sierra-Madero JG, Loria-Acereto A, Zambrano-González E, Kaufer-Horwitz M, González-Duarte A. Rev Invest Clin. 2019;71(5):297-305.
  • Immediate treatment of acute HIV in a tertiary healthcare center: bridging gaps in communication using smartphones. Perez-Patrigeon S, Camiro-Zúñiga A, Jaramillo-Jante MR, Belaunzarán-Zamudio PF, Crabtree-Ramírez B, Soto-Ramírez LE, Calva JJ, Hernández-León C, Mosqueda-Gómez JL, Navarro-Alvarez S, Sierra-Madero JG. HIV Med. 2019 May;20(5):308-316.
  • Mexico’s fragmented health system as a barrier to HIV care. Sierra-Madero JG, Belaunzaran-Zamudio PF, Crabtree-Ramírez B, Magis-Rodriguez C. Lancet HIV. 2019 Feb;6(2):e74-e75.
  • Trends in proportion of older HIV-infected people in care in Latin America and the Caribbean: a growing challenge. Caro-Vega Y, Belaunzarán-Zamudio PF, Crabtree-Ramírez B, Shepherd BE, Mejia F, Giganti MJ, Patterson P, Grinsztejn B, Wolff M, Pape JW, Padgett D, Castilho JL, McGowan C, Sierra-Madero JG. Epidemiol Infect. 2018 Jul;146(10):1308-1311.
  • Prevalence and variables associated with an abnormal ankle-brachial index among patients with human immunodeficiency virus/acquired immunodeficiency syndrome. Hinojosa CA, Nunez-Salgado AE, Anaya-Ayala JE, Laparra-Escareno H, Ortiz-Lopez LJ, Herrera-Caceres JO, Crabtree-Ramirez BE, Sierra-Madero JG. Vascular. 2018 Oct;26(5):540-546.
  • Functional Outcomes 18 Months After Total and Midarm Transplantation: A Case Report. Iglesias M, Ramírez-Berumen M, Butrón P, Alberú-Gómez J, Salazar-Hernández F, Macias-Gallardo J, Leal-Villalpando RP, Zamudio-Bautista J, Acosta V, Jauregui L, Hernández-Campos A, Espinosa-Cruz V, Vázquez-Lamadrid J, González-Sánchez J, Cuellar-Rodriguez J, Sierra-Madero JG, Gaytan-Cervantes R, Contreras-Barbosa S, Navarro-Lara A, Guzman-Gonzalez J, Domínguez-Cherit J, Vilatoba M, Toussaint-Caire S, Vega-Boada F, Gómez-Pérez FJ, Mayorquin-Ruiz M. Transplant Proc. 2018 Apr;50(3):950-958.
  • Durability of Efavirenz Compared With Boosted Protease Inhibitor-Based Regimens in Antiretroviral-Naïve Patients in the Caribbean and Central and South America. Caro-Vega Y, Belaunzarán-Zamudio PF, Crabtree-Ramírez BE, Shepherd BE, Grinsztejn B, Wolff M, Pape JW, Padgett D, Gotuzzo E, McGowan CC, Sierra-Madero JG. Open Forum Infect Dis. 2018 Mar 2;5(3).
  • Association Between Frailty and HIV-Associated Neurodegenerative Disorders Among Older Adults Living with HIV. Zamudio-Rodríguez A, Belaunzarán-Zamudio PF, Sierra-Madero JG, Cuellar-Rodríguez J, Crabtree-Ramírez BE, Alcala-Zermeno JL, Amieva H, Avila-Funes JA. AIDS Res Hum Retroviruses. 2018 May;34(5):449-455.
  • Necrotic lesion in an immunosuppressed patient. López-Iñiguez A, Pérez-Gutiérrez MT, Lambraño-Castillo D, Sierra-Madero JG. Enferm Infecc Microbiol Clin. 2018 Nov;36(9):596-597.