Research Schools

Joseph Allen, DSC, MPH, CIH

Director of the Healthy Buildings Program

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Dr. Joseph G. Allen is an associate professor at the Harvard T.H. Chan School of Public Health, director of Harvard’s Healthy Buildings Program, and co-author of Healthy Buildings: How Indoor Spaces Can Make You Sick—or Keep You Well. Dr. Allen serves on Harvard’s Presidential Committee on Sustainability, he keynoted the White House’s first-ever Indoor Air Quality Summit, and during the COVID-19 pandemic, served as Commissioner of The Lancet COVID-19 Commission and Chair of its Safe Work, Safe Schools, and Safe Travel Task Force. In 2023, Allen was featured on the 60 Minutes episode, The Air We Breathe, spotlighting the value of healthy indoor air quality for virus mitigation. He has authored over 100 peer-reviewed scientific papers and regularly contributes to the New York Times, Washington Post, and Harvard Business Review.

Seongjun Park, PHD

Postdoctoral Fellow with the Healthy Buildings Program

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Seongjun Park is a Postdoctoral Research Fellow with the Healthy Buildings Program. His research focuses on building science, indoor air quality, low-cost particle sensors, residential ventilation systems, indoor chemistry, and the control of infectious diseases. During his PhD, he worked on controlling airborne diseases using germicidal UV (GUV) systems and studied the formation of secondary contaminants associated with GUV disinfection using Computational Fluid Dynamics (CFD). Before his PhD program, Seongjun worked as a building engineer at one of Korea’s leading sustainable building consulting firms, participating in over 100 projects. His responsibilities included stack effect analysis, indoor thermal comfort simulation, and testing, adjusting, and balancing (TAB). Seongjun holds a Ph.D. in Architectural Engineering at Pennsylvania State University, an M.Sc. in Architecture and Architectural Engineering at Seoul National University, and a B.Sc. in Architectural Engineering at Yonsei University.

Jose Vallarino

Project Engineer with the Healthy Buildings Program

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Jose Vallarino is a project engineer in the Department of Environmental Health at the Harvard T.H. Chan School of Public Health. He has over 25 years’ experience managing exposure studies focused on indoor and ambient environmental air quality. He has collaborated in research projects in the US, Africa, Asia and Europe. He, provides oversight of sampling protocols, designs monitoring platforms, and serves as the QA officer for several HSPH research center grants. He also provides guidance on research administration in areas of Human Subjects, Data Use Agreements and Data Security.