Daniel Park

Ph.D., M.S.P.H.

Senior Research Scientist

Research Staff

School: Milken Institute School of Public Health

Department: Environmental and Occupational Health

Contact:

Email: Daniel Park

Office Phone: 202-994-0218

Science & Engineering Hall 800 22nd Street, NW Washington DC 20052

Daniel E. Park, Ph.D., M.S.P.H., is an infectious disease epidemiologist. His research focuses on antimicrobial resistance and stewardship, the human microbiome and susceptibility to HIV and other infections, and vaccine science. His recent work utilizes machine learning approaches and network analyses to elucidate mechanisms underlying associations between the human microbiome and risk factors for disease, including COVID-19, influenza, and HIV. He co-developed novel Bayesian approaches to quantify zoonotic transmission of pathogenic bacteria, and co-leads antibiotic stewardship projects across a range of clinical settings. Prior work includes analysis of direct and indirect effects of pneumococcal conjugate vaccines, evaluation of digital auscultation in pediatric pneumonia diagnosis, and serving as lead coordinator and analyst for the Pneumonia Etiology Research for Child Health (PERCH) project. Dr. Park has collaborated with scientists and policymakers at the WHO, CDC, FDA, Children’s National Medical Center, and other institutions across the globe and has published over 75 peer-reviewed manuscripts in journals including The Lancet, Clinical Infectious Diseases, Biometrics, and Microbiome.

Education

Bachelor of Science (Microbiology), University of Maryland, 2009

Master of Science in Public Health (Global Disease Epidemiology and Control), Johns Hopkins University, 2011

Doctor of Philosophy (Epidemiology), George Washington University, 2023

Research

Impact of human microbiome on bacterial and viral susceptibility (including COVID-19, HIV)
Impact of microbiome determinants on decolonization of opportunistic pathogens
Bayesian approaches for etiologic and disease transmission models, including extraintestinal pathogenic E. coli
Machine learning approaches for epidemiologic studies
Antimicrobial stewardship in telemedicine and urgent care settings
Determinants of vaccine acceptance and hesitancy
Pneumococcal conjugate vaccines and pediatric respiratory disease
Digital auscultation and automated diagnosis of lung sounds

Publications

Peer-Reviewed Publications (h-index: 30 as of May 2026)

Full list of publications is here.

Selected Publications:

Park DE, Aziz M, Salazar, et al. The Nasal Microbiome Modulates Risk for SARS-CoV-2. Lancet eBioMedicine. 2025 Apr. DOI: 10.1016/j.ebiom.2025.105660

Aziz M, Park DE, Quinlivan V, Dimopoulos EA, Wang Y, Sung EH, Roberts ALS, Nyaboe A, Davis MF, Casey JA, Caballero JD, Nachman KE, Takhar HS, Aanensen DM, Parkhill J, Tartof SY, Liu CM, Price LB. Zoonotic Escherichia coli and Urinary Tract Infections: A cross-sectional study in Southern California. mBio. 2025; 0:e01428-25. https://doi.org/10.1128/mbio.01428-25

Park DE, Roberts ALS, Hamdy RF, Balthrop S, Dolan P, Liu CM. Evaluating an urgent care antibiotic stewardship intervention: a multi-network collaborative effort. Infection Control & Hospital Epidemiology. 2025:1-6. doi:10.1017/ice.2024.213

Park DE, Aziz M, Koch BJ, Roach K, Clabots C, Johnson JR, Price LB, Liu CM. Gut microbiome predictors of Escherichia coli sequence type 131 colonization and loss. eBioMedicine. 2024; 99. https://doi.org/10.1016/j.ebiom.2023.104909

Liu CM, Aziz M, Park DE, Wu Z, Stegger M, Li M, Wang Y, Schmidlin K, Johnson TJ, Koch BJ, Hungate BA, Nordstrom L, Gauld L, Weaver B, Rolland D, Statham S, Hall B, Sariya S, Davis GS, Keim PS, Johnson JR, Price LB. Using source-associated mobile genetic elements to identify zoonotic extraintestinal E. coli infections. One Health. 2023; doi: 10.1016/j.onehlt.2023.100518

Park DE, Watson NL, Focht C, Feikin DR, Hammitt LL, Brooks WA, Howie SRC, Kotloff KL, Levine OS, Madhi SA, Murdoch DR, O’Brien KL, Scott JAG, Thea DM, Amorninthapichet T, Awori JO, Bunthi C, Ebruke BE, Elhilali M, Higdon MM, Hossain L, Jahan Y, Moore DP, Mulindwa JM, Mwananyanda L, Naorat S, Prosperi C, Thamthitiwat S, Verwey C, Jablonski K, Power MC, Young HA, Deloria Knoll M, McCollum ED. Digitally recorded and remotely classified lung auscultation compared with conventional stethoscope classifications among children aged 1–59 months enrolled in the Pneumonia Etiology Research for Child Health (PERCH) case–control study. BMJ Open Respiratory Research. 2022;9:e001144. doi: 10.1136/bmjresp-2021-001144

Li M, Park DE, Aziz ML, Liu CM, Price LB, Wu Z. Integrating Sample Similarities into Latent Class Analysis: A Tree-Structured Shrinkage Approach. Biometrics. 2021;10.1111/biom.13580. doi:10.1111/biom.13580

Prodger JL, Abraham AG, Tobian AAR, Park DE, Aziz ML, Roach K, Gray RH, Buchanan L, Kigozi G, Galiwango RM, Ssekasanvu J, Nnamutete J, Kagaayi J, Kaul R, Liu CM. Penile Bacteria Associated with HIV Seroconversion, Inflammation and Immune Cells. Journal of Clinical Investigation Insight. 2021;6(8):e147363. https://doi.org/10.1172/jci.insight.147363

Park DE, Higdon MM, Prosperi C, Baggett H, Brooks WA, Feikin DR, Hammitt LL, Howie SRC, Kotloff KL, Levine OS, Madhi SA, Murdoch DR, O’Brien KL, Scott JAG, Thea DM, Antonio M, Awori JO, Baillie VL, Bunthi C, Kwenda G, Mackenzie GA, Moore DP, Morpeth SC, Mwananyanda L, Paveenkittiporn W, Rahman MZ, Rahman M, Rhodes J, Sow SO, Tapia MD, Deloria Knoll M. Upper respiratory tract co-detection of human endemic coronavirus and high-density Streptococcus pneumoniae associated with increased morbidity and mortality among children <5 years old: findings from the PERCH study. Pediatric Infectious Diseases Journal. 2021; 40(6): 503-512. doi: 10.1097/INF.0000000000003139.

McCollum ED, Park DE, Watson NL, et al. Digital auscultation in PERCH: Associations with chest radiography and pneumonia mortality in children. Pediatric Pulmonology. 2020; 55: 3197‐ 3208. https://doi.org/10.1002/ppul.25046

Emmanouilidou D, McCollum ED, Park DE, Elhilali M. Computerized lung sound screening for pediatric auscultation in noisy field environments. IEEE Trans Biomed Eng. 2017;PP(99):1-1.

Park DE, Baggett HC, Howie SRC, et al. Colonization density of the upper respiratory tract as a predictor of pneumonia—Haemophilus influenzae, Moraxella catarrhalis, Staphylococcus aureus, and Pneumocystis jirovecii. Clin Infect Dis 2017; 64(suppl 3):S328–36.

Feikin DR, Fu W, Park DE, et al. Is higher viral load in the upper respiratory tract associated with severe pneumonia? Findings from the PERCH study. Clin Infect Dis 2017; 64(suppl 3):S337–46.

Emmanouilidou D, McCollum ED, Park DE, Elhilali M. Adaptive Noise Suppression of Pediatric Lung Auscultations With Real Applications to Noisy Clinical Settings in Developing Countries. IEEE Trans Biomed Eng. 2015;62(9):2279-2288. doi:10.1109/TBME.2015.2422698

Park DE, Johnson TS, Nonyane BAS, Chandir S, Conklin L, Fleming-Dutra KE, Loo JD, Goldblatt D, Whitney CG, O’Brien KL, Deloria Knoll M. The differential impact of coadministered vaccines, geographic region, vaccine product and other covariates on pneumococcal conjugate vaccine immunogenicity. Pediatr Infect Dis J. 2014;33 Suppl 2 (January): S130-9.

Teaching

PUBH 6146: Microbiomes and Microbial Ecology in Public Health