Ziyad Al-Aly

Ziyad Al-Aly is an American physician and clinical epidemiologist who is currently Director of the Clinical Epidemiology Center and Chief of the Research and Development at the Veterans Affairs St. Louis Health Care System. He is also a clinical epidemiologist at Washington University in St. Louis. He has led multiple studies on long covid and its sequelae.

Early life
Al-Aly was born in Tripoli, Lebanon to teachers. He grew up during the Lebanese civil war which dominated Lebanon from 1975 to 1990, emigrating to the United States in 2000.

Education
Al-Aly holds a medical degree from the American University of Beirut. He completed his post-graduate medical education at Saint Louis University and Washington University in St. Louis.

Career
Al-Aly's research work has been cited more than a 100,000 times and he has an h-index of more than 79 according to Google Scholar.

Long COVID research
Al-Aly led work which provided the first systematic characterization of the post-acute sequelae of SARS-CoV-2 infection. He subsequently led work which characterized the increased risks of cardiovascular disease, neurologic disorders, mental health disorders, gastrointestinal disorders, diabetes, dyslipidemia, and kidney disease following SARS-CoV-2 infection. His lab also produced evidence characterizing the effects of COVID-19 vaccines on long COVID and the health consequences of repeated infections with SARS-CoV-2.

In 2024, Al-Aly testified before the U.S. Senate Health, Education, Labor and Pensions Committee as an expert witness on Long Covid. He called for the establishment of an NIH institute to address Long Covid and Infection-Associated Chronic Conditions (IACCs) — also called post-acute infection syndrome — with a funding of at least $1 billion per year.

Pharmacoepidemiology
Including work characterizing the adverse health effect of proton pump inhibitors and comparative effectiveness of antihyperglycemic medications. His work also included examining the effectiveness of COVID-19 antivirals including paxlovid (nirmatrelvir/ritonavir) and molnupiravir on acute COVID-19 outcomes and long COVID.

Environmental epidemiology research
Including work which evaluated the effect of air pollution on kidney health, diabetes, and early mortality.

Honors and awards
In 2023, Al-Aly was awarded the U.S. Department of Veterans Affairs Secretary's Award — the highest VA award — for outstanding contributions to research. He was named one of the 100 most influential people in health in 2024 by TIME100 Health.