Omar Yaxmehen Bello Chavolla
Visiting Scholars and Scientists

Omar Yaxmehen Bello Chavolla

Lown Scholar

Global Health and Population


I am an Assistant Professor at the National Institute for Geriatrics in Mexico City, an Instructor in Physiology and Applied Biostatistics at the National Autonomous University Faculty of Medicine in Mexico and a Lown Scholar at the Harvard T.H. Chan School of Public Health. The focus of my research is on cardiovascular disease risk factor epidemiology in high burden settings and on the intersection of these risk factors with the aging process in metabolic and endocrine systems. My research program leverages domestic and international collaborations to identify how molecular, clinical, and sociodemographic mechanisms underlying metabolic aging accelerate the risk for cardiovascular disease among adults in Mexico and in Latin America.

MD, 01/2018, Medicine
National Autonomous University of Mexico, Mexico

Specialist, 06/2019, Applied Statistics
National Autonomous University of Mexico, Mexico

PhD, 10/2019, Diabetes and Endocrinology
National Autonomous University of Mexico, Mexico

Bernard Lown Scholar2023
Harvard T.H. Chan School of public Health

Early Investigator Award2022
Endocrine Society

Dr. José Laguna García Award for Excellence in Teaching2022
Faculty of Medicine of the National Autonomous University of Mexico

National Youth Award in Science and Technology2021
Mexican Government

National Investigator Level 12020
National Science and Technology Council

Interstellar Initiative Award2020
New York Academy of Sciences and Japan Agency for Medical Research and Development

Mexico City Youth Award in Environmental and Public Health2019
Mexico City Government

Dr. Jorge Rosenkranz Award in Clinical Research2018
Mexican Health Foundation


Effectiveness of a nationwide COVID-19 vaccination program in Mexico against symptomatic COVID-19, hospitalizations, and death: a retrospective analysis of national surveillance data.

Bello-Chavolla OY, Antonio-Villa NE, Valdés-Ferrer SI, Fermín-Martínez CA, Fernández-Chirino L, Vargas-Vázquez A, Ramírez-García D, Mancilla-Galindo J, Kammar-García A, Ávila-Funes JA, Zúñiga-Gil CH, García-Grimshaw M, Ceballos-Liceaga SE, Carbajal-Sandoval G, Montes-González JA, Zaragoza-Jiménez CA, García-Rodríguez G, Cortés-Alcalá R, Reyes-Terán G, López-Gatell H, Gutiérrez-Robledo LM.

Int J Infect Dis. 2023 Apr. 129:188-196. PMID: 36775188

Incidence of Guillain-Barré syndrome following SARS-CoV-2 immunization: Analysis of a nationwide registry of recipients of 81 million doses of seven vaccines.

García-Grimshaw M, Galnares-Olalde JA, Bello-Chavolla OY, Michel-Chávez A, Cadena-Fernández A, Briseño-Godínez ME, Antonio-Villa NE, Núñez I, Gutiérrez-Romero A, Hernández-Vanegas L, Del Mar Saniger-Alba M, Carrillo-Mezo R, Ceballos-Liceaga SE, Carbajal-Sandoval G, Flores-Silva FD, Díaz-Ortega JL, Cortes-Alcalá R, Pérez-Padilla JR, López-Gatell H, Chiquete E, Reyes-Terán G, Arauz A, Valdés-Ferrer SI.

Eur J Neurol. 2022 11. 29(11):3368-3379. PMID: 35841212

Clinical prediction models for mortality in patients with covid-19: external validation and individual participant data meta-analysis.

de Jong VMT, Rousset RZ, Antonio-Villa NE, Buenen AG, Van Calster B, Bello-Chavolla OY, Brunskill NJ, Curcin V, Damen JAA, Fermín-Martínez CA, Fernández-Chirino L, Ferrari D, Free RC, Gupta RK, Haldar P, Hedberg P, Korang SK, Kurstjens S, Kusters R, Major RW, Maxwell L, Nair R, Naucler P, Nguyen TL, Noursadeghi M, Rosa R, Soares F, Takada T, van Royen FS, van Smeden M, Wynants L, Modrák M, Asselbergs FW, Linschoten M, Moons KGM, Debray TPA.

BMJ. 2022 07 12. 378:e069881. PMID: 35820692