Dr. James Chen, PhD, MPH
Epidemiologist • Former CDC Fellow • Public Health Researcher
Dr. Chen brings deep expertise in infectious disease epidemiology to InfluenzaSymptoms.com. His background in outbreak investigation, disease surveillance, and vaccine effectiveness research ensures that every article is grounded in the latest epidemiological evidence and public health best practices.
Credentials & Education
- PhD, Epidemiology — Johns Hopkins Bloomberg School of Public Health, 2014
- MPH, Master of Public Health — Emory University Rollins School of Public Health, 2010
- CDC Epidemic Intelligence Service (EIS) Fellowship — Centers for Disease Control and Prevention, 2014–2016
- BS, Microbiology & Immunology — University of California, Berkeley, 2008
Professional Experience
- Senior Epidemiologist — National Center for Immunization and Respiratory Diseases (NCIRD), CDC, Atlanta, GA (2016–2023)
- CDC Epidemic Intelligence Service (EIS) Officer — Assigned to influenza surveillance and outbreak response; deployed to multiple state and international outbreak investigations (2014–2016)
- Research Fellow — Johns Hopkins Center for Global Health, infectious disease modeling and vaccine impact studies (2012–2014)
- Public Health Consultant & Medical Reviewer — Independent practice, providing epidemiological expertise for health communication (2023–present)
Areas of Expertise
Role at InfluenzaSymptoms.com
Dr. Chen serves as the senior epidemiological reviewer for InfluenzaSymptoms.com. He reviews content related to disease transmission, flu season patterns, vaccine science, and comparisons between influenza and other respiratory illnesses (COVID-19, RSV, colds). His training at the CDC ensures that every article reflects current public health guidance and the most reliable epidemiological data available.
Dr. Chen also writes articles on epidemiology-focused topics, including flu season timing, vaccine effectiveness data, and how to interpret public health statistics. He is committed to making complex epidemiological concepts accessible to a general audience without sacrificing scientific accuracy.
Selected Publications
- Chen J, et al. “Estimating influenza vaccine effectiveness against hospitalization in adults aged 65 and older, 2019–2023.” Clinical Infectious Diseases, 2024.
- Chen J, Rodriguez M, et al. “Seasonal patterns of influenza A(H3N2) drift variants and implications for vaccine strain selection.” Journal of Infectious Diseases, 2022.
- Williams K, Chen J, et al. “Comparative transmission dynamics of influenza and SARS-CoV-2 in household settings.” Emerging Infectious Diseases, 2021.