Sen Pei

Welcome to join @ColumbiaMSPH seminar series on infectious disease modeling featuring Prof. Jessica Metcalf from Princeton University on 5/5 Tue at 12 pm ET! Open to the public over Zoom. For information and registration: @columbia.edu&recurrenceId=" target="_blank" rel="nofollow noopener">events.columbia.edu/cal/event/even…

Welcome to join @ColumbiaMSPH seminar series on infectious disease modeling featuring Prof. Pejman Rohani from the University of Georgia on 4/21 Tue at 2 pm ET! Open to the public over Zoom. For information and registration: @columbia.edu&recurrenceId=" target="_blank" rel="nofollow noopener">events.columbia.edu/cal/event/even…

Welcome to join @ColumbiaMSPH Columbia Mailman seminar series on infectious disease modeling featuring Prof. Jeff Imai-Eaton from Harvard @HarvardChanSPH @CCDD_HSPH on 4/7 Tue at 12 pm ET! Open to the public over Zoom. For information and registration: @columbia.edu&recurrenceId=" target="_blank" rel="nofollow noopener">events.columbia.edu/cal/event/even…

Really enjoyed presenting at the Columbia Global Research Stabilization Fund Spring Showcase today. RSF’s support last year was critical in keeping our epidemic forecasting work moving. Inspired by the breadth of research and looking forward to what comes next!

Honored to be elected as a Steering Committee Member of @MIDAS_Network Grateful to give back to a community that has shaped my career, and looking forward to supporting early-career investigators and strengthening engagement with international scholars.

Two postdoc positions open at SUMOC (Sorbonne Université | INSERM), Paris, within the EPIcx lab. 🦠 Network epidemiology of healthcare-associated infections (ARCANE) 🧠 Coupled behavior–disease modeling (PREVIX) 2-y positions | Start June 2026 #epidemiology #networks #matrices

Welcome to join @ColumbiaMSPH seminar series on infectious disease modeling featuring Prof. Matthew Ferrari @TheFerrariLab from Penn State @ciddpsu on 3/17 Tue at 12 pm EST! Open to the public over Zoom. For more information and registration: @columbia.edu&recurrenceId=" target="_blank" rel="nofollow noopener">events.columbia.edu/cal/event/even…

📢 I'm recruiting a postdoc to start in summer 2026! My lab is part of @Berkeley_EECS, @UCJointCPH & @berkeley_ai. We're looking for candidates in AI & society, with projects on the societal impacts of gen AI (collaborating w/ real-world orgs) and modeling human behavior with AI!

Welcome to join Columbia Mailman seminar series on infectious disease modeling featuring Prof. Virginia Pitzer from Yale on 2/10 Tue at 12 pm EST! Open to the public over Zoom. For more information and registration: @columbia.edu&recurrenceId=" target="_blank" rel="nofollow noopener">events.columbia.edu/cal/event/even…

H1N1 and COVID-19 spread fast in U.S. cities—often before interventions kicked in. Air travel & key metro hubs drove early transmission. Wastewater surveillance could help slow the next pandemic. @PNASNews @SenPei_CU ow.ly/6mth50XSF6E

Takeaway: Pandemic respiratory viruses spread fast, often before we can clearly detect them. Preparedness needs to plan for uncertainty, and surveillance must be broad, not just focused on a few major hubs. Grateful to an amazing group of collaborators across institutions!

We also ran simulations for future pandemics. Results suggest that wastewater surveillance limited to a few major hubs isn’t enough - broader coverage is needed to meaningfully slow early geographic spread.

Excited to share a new study published in PNAS! @PNASNews We reconstructed the early, cryptic spatial spread of 2009 H1N1 influenza and SARS-CoV-2 across US metropolitan areas. Link👉pnas.org/doi/10.1073/pn… #PandemicPreparedness #InfectiousDisease #HumanMobility

2025 was a challenging year for many of us. As the year comes to a close, let's pause to recognize and celebrate every accomplishment and milestone, big or small. Each step forward matters. As we head into 2026, let’s keep climbing with aspiration, resilience, and strength!

I am teaching Introduction to Network Science for a third year at Mailman! @ColumbiaMSPH Very grateful to have positive evaluations from students with diverse backgrounds. Welcome to join this small-size, engaged course if you are interested in networks and systems thinking!

Very interesting study on respiratory virus transmission in schools! "Prolonged exposure in shared, poorly ventilated spaces, which potentially includes several infectious sources, drives respiratory virus transmission more than close contact." nature.com/articles/s4146…

Welcome to join @ColumbiaMSPH seminar series on infectious disease modeling featuring Prof. Mark Jit @markjit from NYU on 12/16 Tue at 12 pm EST! Open to the public over Zoom. For more information and registration: 👉 @columbia.edu&recurrenceId=" target="_blank" rel="nofollow noopener">events.columbia.edu/cal/event/even…

🦠 Pandemics don’t spread randomly - they follow the paths we create through our social lives and movements. 📖 🔊 Read + listen about how networks shape outbreaks: worldpop.org/blog/how-our-s… #InfectiousDisease #NetworkScience #HealthBehaviours #Epidemics #DataScience