• 2007 – Specialty in Infectious Diseases, INNSZ.
  • 2005 – Specialty in Internal Medicine, ABC Medical Center.
  • 2000 – Medicine, La Salle University.

Academic appointments:

  • Senior Researcher D at the HIV Clinic, Infectology Department of INCMNSZ.
  • It belongs to the National System of Researchers (SNI), level II.

Research interests:

  • Conduction of phase II to IV clinical trials of new antiretroviral treatment strategies or molecules
  • Management of advanced HIV disease and opportunistic infections.
  • Observational studies on HIV and its comorbidities.

Featured projects:

  • Participation as a co-investigator in Mexico for the Caribbean, Central America, and South America to the HIV epidemiology network (CCASAnet), experience in the direction and management of clinical trials.
  • Participation in international collaborations such as HIV: TB, IeDEA, ICONA, Fundación Hupedes, Kirby Institute, among others.


  • Clinical Characteristics and Mortality of Health-Care Workers With Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection in Mexico City. Guerrero-Torres L, Caro-Vega Y, Crabtree-Ramírez B, Sierra-Madero JG. Clin Infect Dis. 2021 Jul 1;73(1):e199-e205. doi: 10.1093/cid/ciaa1465. PMID: 32986118 Free PMC article.
  • Being a Latin American Woman in Science During the COVID-19 Pandemic. Crabtree-Ramírez B. Epidemiology. 2021 Jan;32(1):140-141. doi: 10.1097/EDE.0000000000001293. PMID: 33122560 No abstract available.
  • Antiretroviral therapy and Kaposi’s sarcoma trends and outcomes among adults with HIV in Latin America. Castilho JL, Kim A, Jenkins CA, Grinsztejn B, Gotuzzo E, Fink V, Padgett D, Belaunzaran-Zamudio PF, Crabtree-Ramírez B, Escuder MM, Souza RA, Tenore SB, Pimentel SR, Ikeda MLR, de Alencastro PR, Tupinanbas U, Brites C, Luz E, Netto J, Cortes CP, Grangeiro A, Shepherd BE, McGowan CC; Caribbean, Central, South America network for HIV Epidemiology (CCASAnet). J Int AIDS Soc. 2021 Jan;24(1):e25658. doi: 10.1002/jia2.25658. PMID: 33405281 Free PMC article.
  • Diagnostic accuracy of antigen detection in urine and molecular assays testing in different clinical samples for the diagnosis of progressive disseminated histoplasmosis in patients living with HIV/AIDS: A prospective multicenter study in Mexico. Martínez-Gamboa A, Niembro-Ortega MD, Torres-González P, Santiago-Cruz J, Velázquez-Zavala NG, Rangel-Cordero A, Crabtree-Ramírez B, Gamboa-Domínguez A, Reyes-Gutiérrez E, Reyes-Terán G, Lozano-Fernandez VH, Ahumada-Topete VH, Martínez-Ayala P, Manríquez-Reyes M, Ramírez-Hinojosa JP, Rodríguez-Zulueta P, Hernández-León C, Ruíz-Quiñones J, Rivera-Martínez NE, Chaparro-Sánchez A, Andrade-Villanueva J, González-Hernández LA, Cruz-Martínez S, Flores-Barrientos O, Gaytán-Martínez JE, Magaña-Aquino M, Cervantes-Sánchez A, Olivas-Martínez A, Araujo-Meléndez J, Del Rocío Reyes-Montes M, Duarte-Escalante E, Frías-De León MG, Ramírez JA, Taylor ML, de León-Garduño AP, Sifuentes-Osornio J. PLoS Negl Trop Dis. 2021 Mar 8;15(3):e0009215. doi: 10.1371/journal.pntd.0009215. eCollection 2021 Mar. PMID: 33684128 Free PMC article.
  • COVID-19-associated invasive pulmonary aspergillosis in a tertiary care center in Mexico City. Vélez Pintado M, Camiro-Zúñiga A, Aguilar Soto M, Cuenca D, Mercado M, Crabtree-Ramirez B; ARMII study gruop. Med Mycol. 2021 Jul 14;59(8):828-833. doi: 10.1093/mmy/myab009. PMID: 33724423 Free PMC article.
  • Estimated life expectancy gains with antiretroviral therapy among adults with HIV in Latin America and the Caribbean: a multisite retrospective cohort study. Smiley CL, Rebeiro PF, Cesar C, Belaunzaran-Zamudio PF, Crabtree-Ramirez B, Padgett D, Gotuzzo E, Cortes CP, Pape J, Veloso VG, McGowan CC, Castilho JL; Caribbean, Central and South America network for HIV epidemiology (CCASAnet). Lancet HIV. 2021 May;8(5):e266-e273. doi: 10.1016/S2352-3018(20)30358-1. Epub 2021 Apr 20. PMID: 33891877 Free PMC article.
  • HIV-positive patients presenting with peripheral blood cytopenias: is bone marrow assessment a priority? Rajme-Lopez S, Crabtree-Ramírez B, Acosta-Medina AA, Olivas-Martínez A, Bourlon C. Hematol Transfus Cell Ther. 2021 May 11:S2531-1379(21)00049-3. doi: 10.1016/j.htct.2021.02.008. Online ahead of print. PMID: 34312113 Free article.
  • Higher Veterans Aging Cohort Study 2.0 Index Score Predicts Functional Decline Among Older Adults Living with HIV. Hernández-Favela CG, Hernández-Ruiz VA, Bello-Chavolla OY, Crabtree-Ramírez B, Sierra-Madero J, Amieva H, Erlandson KM, Avila-Funes JA. AIDS Res Hum Retroviruses. 2021 Nov;37(11):878-883. doi: 10.1089/AID.2020.0295. Epub 2021 Sep 23. PMID: 34465139