Ziyad Al-Aly, MD, is a clinical epidemiologist at Washington University School of Medicine in St. Louis who has been recognized as one of the top 100 influencers in global health on the inaugural Time100 Health list. He is known for his expertise in analyzing big data to uncover important health insights and has gained widespread attention for leading over twenty studies on the long-term health effects of COVID-19, known as long COVID.
Al-Aly serves as the director of the Clinical Epidemiology Center at the VA St. Louis Health Care System and heads the research and development service. One of his key contributions has been his ability to utilize a vast health records database with data from over 10 million individuals maintained by the U.S. Department of Veterans Affairs to discover that individuals who have had SARS-CoV-2, the virus that causes COVID-19, are at a heightened risk of developing serious and potentially life-threatening issues such as heart, brain, kidney, gastrointestinal, and mental health problems compared to those who have not been infected.
Al-Aly’s work has shed light on the long-term consequences of COVID-19 infection and highlighted the importance of ongoing research and understanding of the impact of the virus on various aspects of health. His contributions to the field of epidemiology and global health have earned him a well-deserved spot on the prestigious Time100 Health list. To learn more about Al-Aly’s groundbreaking research and accomplishments, visit
