Sen Pei
@senpei.bsky.social
Asst Prof @ColumbiaMSPH. A mix of Infectious Diseases, Environmental Health, Network Science & Complex Systems. Views are my own.
Website: https://senpei-cu.github.io/
Website: https://senpei-cu.github.io/
Sunny and warm in San Diego. Preparing for #EPIDEMICS10 next week!
November 29, 2025 at 4:26 PM
Sunny and warm in San Diego. Preparing for #EPIDEMICS10 next week!
We then built an inference framework that combines patient movement, clinical cultures, whole-genome sequencing, and risk factors in electronic health records to estimate who is likely colonized. 3/
November 19, 2025 at 8:23 PM
We then built an inference framework that combines patient movement, clinical cultures, whole-genome sequencing, and risk factors in electronic health records to estimate who is likely colonized. 3/
Asymptomatic carriers drive silent transmission of AMROs in hospitals, but they’re hard to detect due to sparse observations. We developed an agent-based model informed by real-world time-varying contact networks in hospitals to simulate AMRO transmission and community importation. 2/
November 19, 2025 at 8:23 PM
Asymptomatic carriers drive silent transmission of AMROs in hospitals, but they’re hard to detect due to sparse observations. We developed an agent-based model informed by real-world time-varying contact networks in hospitals to simulate AMRO transmission and community importation. 2/
Sharing our new study on identifying asymptomatic carriers of antimicrobial-resistant organisms (AMROs) in hospitals, out in @natcomms.nature.com. We combine patient mobility, clinical cultures, EHR, and genomics to identify hidden AMRO carriers. #AMR #HAI #HospitalEpi
Link 👉 rdcu.be/eQKKF
1/
Link 👉 rdcu.be/eQKKF
1/
November 19, 2025 at 8:23 PM
Sharing our new study on identifying asymptomatic carriers of antimicrobial-resistant organisms (AMROs) in hospitals, out in @natcomms.nature.com. We combine patient mobility, clinical cultures, EHR, and genomics to identify hidden AMRO carriers. #AMR #HAI #HospitalEpi
Link 👉 rdcu.be/eQKKF
1/
Link 👉 rdcu.be/eQKKF
1/
A super interesting study on how ants alter their nest networks to prevent epidemics! Network topology metrics were used to measure the effect on disease transmission.
www.science.org/doi/full/10....
www.science.org/doi/full/10....
November 14, 2025 at 4:27 AM
A super interesting study on how ants alter their nest networks to prevent epidemics! Network topology metrics were used to measure the effect on disease transmission.
www.science.org/doi/full/10....
www.science.org/doi/full/10....
Fantastic talk by Dr. Holden Thorp, Editor-in-Chief of Science, on the future of scientific research. Especially inspiring to hear how many scientific giants pushed forward even when others tried to stop them. In times of uncertainty and challenge, do the work.
November 11, 2025 at 6:29 PM
Fantastic talk by Dr. Holden Thorp, Editor-in-Chief of Science, on the future of scientific research. Especially inspiring to hear how many scientific giants pushed forward even when others tried to stop them. In times of uncertainty and challenge, do the work.
Our group is presenting at the MIDAS Network Annual Meeting! I will present on reconstructing the early spatial spread of pandemics in the US. Dr. Qing Yao will discuss the use of GNN to predict adaptive mobility for improving epidemic forecasts. Welcome to join us! @midas-network.bsky.social
November 4, 2025 at 12:54 PM
Our group is presenting at the MIDAS Network Annual Meeting! I will present on reconstructing the early spatial spread of pandemics in the US. Dr. Qing Yao will discuss the use of GNN to predict adaptive mobility for improving epidemic forecasts. Welcome to join us! @midas-network.bsky.social
Oof, this is a tough one...
October 27, 2025 at 1:40 PM
Oof, this is a tough one...
Fall is coming. Enjoy a warm and colorful afternoon in the woods. 🍁
October 7, 2025 at 7:47 PM
Fall is coming. Enjoy a warm and colorful afternoon in the woods. 🍁
🚨 JOB ALERT! Our group is recruiting a postdoc to develop novel methodologies for early outbreak detection and inference using AI/ML, modeling, and data science. This is a multi-year position providing stable research support. Welcome to apply and share with others!
👉 apply.interfolio.com/173722
👉 apply.interfolio.com/173722
September 12, 2025 at 2:35 PM
🚨 JOB ALERT! Our group is recruiting a postdoc to develop novel methodologies for early outbreak detection and inference using AI/ML, modeling, and data science. This is a multi-year position providing stable research support. Welcome to apply and share with others!
👉 apply.interfolio.com/173722
👉 apply.interfolio.com/173722
So proud to support Nidhi Ram’s presentation in the Science Research Fellows program! Nidhi is a freshman and an SFR fellow, a prestigious four-year designation for some of Columbia’s most promising science students. Truly impressed by the intellect, maturity and academic ability of all fellows.
July 30, 2025 at 4:13 PM
So proud to support Nidhi Ram’s presentation in the Science Research Fellows program! Nidhi is a freshman and an SFR fellow, a prestigious four-year designation for some of Columbia’s most promising science students. Truly impressed by the intellect, maturity and academic ability of all fellows.
Within the Helene-affected regions, coastal counties showed stronger evacuation than inland counties, which suffered the most devastating damages and losses. There is an urgent need to increase awareness and develop evacuation plans in places that are unprepared for impending climate threats. 4/
July 22, 2025 at 3:28 PM
Within the Helene-affected regions, coastal counties showed stronger evacuation than inland counties, which suffered the most devastating damages and losses. There is an urgent need to increase awareness and develop evacuation plans in places that are unprepared for impending climate threats. 4/
Milton primarily impacted coastal areas and prompted sharp increases in out-region travel prior to landfall and sustained elevated mobility in the post-disaster period. In contrast, Helene affected mostly inland areas, where mobility changes were modest and largely within natural variation. 3/
July 22, 2025 at 3:28 PM
Milton primarily impacted coastal areas and prompted sharp increases in out-region travel prior to landfall and sustained elevated mobility in the post-disaster period. In contrast, Helene affected mostly inland areas, where mobility changes were modest and largely within natural variation. 3/
First day at SMB 2025 @smbmathbiology.bsky.social in the beautiful city of Edmonton! Today, we have a minisymposium "Scenario Modeling to Inform Public Policymaking" (10:20 am and 4 pm) with excellent talks on bridging mathematical models and policymaking. Welcome to stop by and join the discussion!
July 14, 2025 at 2:01 PM
First day at SMB 2025 @smbmathbiology.bsky.social in the beautiful city of Edmonton! Today, we have a minisymposium "Scenario Modeling to Inform Public Policymaking" (10:20 am and 4 pm) with excellent talks on bridging mathematical models and policymaking. Welcome to stop by and join the discussion!
We developed a model incorporating place-specific mobility, indoor crowdedness & dwell time, and seasonality of virus transmissibility. This model explained the heterogeneous transmission of SARS-CoV-2 across NYC neighborhoods in 2020.
April 30, 2025 at 3:50 PM
We developed a model incorporating place-specific mobility, indoor crowdedness & dwell time, and seasonality of virus transmissibility. This model explained the heterogeneous transmission of SARS-CoV-2 across NYC neighborhoods in 2020.
Using aggregated mobile foot-traffic data, we measured the daily connectivity across 42 NYC neighborhoods in different activities. We also quantified contact patterns using indoor crowdedness and dwell time for each place category.
April 30, 2025 at 3:50 PM
Using aggregated mobile foot-traffic data, we measured the daily connectivity across 42 NYC neighborhoods in different activities. We also quantified contact patterns using indoor crowdedness and dwell time for each place category.
Sharing our new study out in PLoS Comput Biol.
We developed a behavior-driven epidemic model to generate neighborhood-level COVID-19 forecasts across NYC. We used mobile foot traffic data to measure how and where people mix and forecast local spread.
Read here: doi.org/10.1371/jour...
We developed a behavior-driven epidemic model to generate neighborhood-level COVID-19 forecasts across NYC. We used mobile foot traffic data to measure how and where people mix and forecast local spread.
Read here: doi.org/10.1371/jour...
April 30, 2025 at 3:50 PM
Sharing our new study out in PLoS Comput Biol.
We developed a behavior-driven epidemic model to generate neighborhood-level COVID-19 forecasts across NYC. We used mobile foot traffic data to measure how and where people mix and forecast local spread.
Read here: doi.org/10.1371/jour...
We developed a behavior-driven epidemic model to generate neighborhood-level COVID-19 forecasts across NYC. We used mobile foot traffic data to measure how and where people mix and forecast local spread.
Read here: doi.org/10.1371/jour...
So glad to have @jgyou.bsky.social give an intriguing lecture on contagion modeling and network inference in our network science class!
April 17, 2025 at 8:40 PM
So glad to have @jgyou.bsky.social give an intriguing lecture on contagion modeling and network inference in our network science class!
It was great to have @danielmalinsky.bsky.social give an excellent lecture on casual graph discovery in my network science class today!
April 3, 2025 at 8:23 PM
It was great to have @danielmalinsky.bsky.social give an excellent lecture on casual graph discovery in my network science class today!
Welcome to join Columbia Mailman seminar series on infectious disease modeling featuring Prof. Joshua Warren from Yale on 2/11 at 1 pm EST! Open to the public over Zoom.
For more information and registration: events.columbia.edu/cal/event/ev...
For more information and registration: events.columbia.edu/cal/event/ev...
February 4, 2025 at 2:25 PM
Welcome to join Columbia Mailman seminar series on infectious disease modeling featuring Prof. Joshua Warren from Yale on 2/11 at 1 pm EST! Open to the public over Zoom.
For more information and registration: events.columbia.edu/cal/event/ev...
For more information and registration: events.columbia.edu/cal/event/ev...
We will kick off the Columbia Mailman seminar series on infectious disease modeling in the spring semester with a fantastic talk by Prof. Marc Lipsitch from @harvardchanschool.bsky.social ! Welcome to join in person or over Zoom on 1/21.
Register here: events.columbia.edu/cal/event/ev...
Register here: events.columbia.edu/cal/event/ev...
January 14, 2025 at 5:40 PM
We will kick off the Columbia Mailman seminar series on infectious disease modeling in the spring semester with a fantastic talk by Prof. Marc Lipsitch from @harvardchanschool.bsky.social ! Welcome to join in person or over Zoom on 1/21.
Register here: events.columbia.edu/cal/event/ev...
Register here: events.columbia.edu/cal/event/ev...
So glad to be back in Pittsburgh for a few days! We went to places we lived and where we used to take our baby. Feel taking a time machine going back in time. Surreal!
December 14, 2024 at 2:06 AM
So glad to be back in Pittsburgh for a few days! We went to places we lived and where we used to take our baby. Feel taking a time machine going back in time. Surreal!
Hey, students at Columbia Mailman, I am teaching Introduction to Network Science in Spring 2025. Welcome to join us and have fun playing with networks! This year we will have three fantastic lectures talking about gene regulation networks, causal inference, and high-order networks.
December 12, 2024 at 5:43 PM
Hey, students at Columbia Mailman, I am teaching Introduction to Network Science in Spring 2025. Welcome to join us and have fun playing with networks! This year we will have three fantastic lectures talking about gene regulation networks, causal inference, and high-order networks.
Welcome to ColumbiaMSPH Seminar Series on Infectious Disease Modeling featuring @gmknght.bsky.social from LSHTM on Dec 10 (zoom open to the public). Register to join! For more details and registration: events.columbia.edu/cal/event/ev...
Future events: www.publichealth.columbia.edu/about-us/eve...
Future events: www.publichealth.columbia.edu/about-us/eve...
December 4, 2024 at 3:48 PM
Welcome to ColumbiaMSPH Seminar Series on Infectious Disease Modeling featuring @gmknght.bsky.social from LSHTM on Dec 10 (zoom open to the public). Register to join! For more details and registration: events.columbia.edu/cal/event/ev...
Future events: www.publichealth.columbia.edu/about-us/eve...
Future events: www.publichealth.columbia.edu/about-us/eve...
Welcome to the Columbia Mailman Seminar Series on Infectious Disease Modeling featuring @anaisabelbento.bsky.social on Dec 3 (hybrid and open to the public). Register to join over Zoom! For registration: events.columbia.edu/cal/event/ev...
Future events: publichealth.columbia.edu/about-us/eve...
Future events: publichealth.columbia.edu/about-us/eve...
November 27, 2024 at 2:51 PM
Welcome to the Columbia Mailman Seminar Series on Infectious Disease Modeling featuring @anaisabelbento.bsky.social on Dec 3 (hybrid and open to the public). Register to join over Zoom! For registration: events.columbia.edu/cal/event/ev...
Future events: publichealth.columbia.edu/about-us/eve...
Future events: publichealth.columbia.edu/about-us/eve...