Publications

The impact of behavioral homophily and conformity on epidemic spreading in networks with large groups

Olivier Ribordy, Clara Granell, Guillaume St-Onge, Laurent Hébert-Dufresne, Alex Arenas, Antoine Allard

Preprint · 2026

Simpson's paradox explains the ubiquity of nonlinear, threshold, and complex contagions

Laurent Hébert-Dufresne, Antoine Allard, Jean-Gabriel Young, William H. W. Thompson, Guillaume St-Onge

Preprint · 2026

Group dynamics shape contagion onsets and multistable active phases under collective reinforcement

Santiago Lamata-Otín, Federico Malizia, Leah A. Keating, Guillaume St-Onge, Vito Latora, Jesús Gómez-Gardeñes, Laurent Hébert-Dufresne

Preprint · 2026

A multi-scale model to evaluate airport wastewater surveillance and ICU genomic monitoring for pandemic preparedness

Benjamin K. Reddy, Joseph L.-H. Tsui, Kieran O. Drake, Guillaume St-Onge, Jessica T. Davis, Cathal Mills, Jake Dunning, Isaac I. Bogoch, Samuel V. Scarpino, Samir Bhatt, Oliver G. Pybus, Andrew Rambaut, Matthew J. Wade, Thomas Ward, Meera Chand, Erik M. Volz, Alessandro Vespignani, Moritz U. G. Kraemer

Preprint · 2026

Evaluation of stochastic trajectory-based epidemic models using the energy score

Clara Bay, Kunpeng Mu, Guillaume St-Onge, Matteo Chinazzi, Jessica T. Davis, Alessandro Vespignani

Preprint · 2025

Detecting structural perturbations from time series with deep learning

Edward Laurence, Charles Murphy, Guillaume St-Onge, Xavier Roy-Pomerleau, Vincent Thibeault

Preprint · 2020

A vision for estimation of the instantaneous reproductive number

Chad W. Milando, George G. Vega Yon, Kaitlyn Johnson, Alessandra Urbinati, Guillaume St-Onge, Brennan Klein, Anne Cori, Laura F. White, Rt Collabathon participants

Epidemics 54, 100885 (2026)

Pandemic monitoring with global aircraft-based wastewater surveillance networks

Guillaume St-Onge, Jessica T. Davis, Laurent Hébert-Dufresne, Antoine Allard, Alessandra Urbinati, Samuel V. Scarpino, Matteo Chinazzi, Alessandro Vespignani

Nat. Med. 31, 788–796 (2025)

Characteristic scales and adaptation in higher-order contagions

Giulio Burgio, Guillaume St-Onge, Laurent Hébert-Dufresne

Nat. Commun. 16, 4589 (2025)

One pathogen does not an epidemic make: A review of interacting contagions, diseases, beliefs, and stories

Laurent Hébert-Dufresne, Yong-Yeol Ahn, Antoine Allard, Vittoria Colizza, Jessica W. Crothers, Peter Sheridan Dodds, Mirta Galesic, Fakhteh Ghanbarnejad, Dominique Gravel, Ross A. Hammond, Kristina Lerman, Juniper Lovato, John J. Openshaw, S. Redner, Samuel V. Scarpino, Guillaume St-Onge, Timothy R. Tangherlini, Jean-Gabriel Young

npj Complex. 2, 26 (2025)

Ensemble²: Scenarios ensembling for communication and performance analysis

Clara Bay, Guillaume St-Onge, Jessica T. Davis, Matteo Chinazzi, Emily Howerton, Justin Lessler, Michael C. Runge, Katriona Shea, Shaun Truelove, Cecile Viboud, Alessandro Vespignani

Epidemics 46, 100748 (2024)

Nonlinear bias toward complex contagion in uncertain transmission settings

Guillaume St-Onge, Laurent Hébert-Dufresne, Antoine Allard

Proc. Natl. Acad. Sci. U.S.A. 121, e2312202121 (2023)

Hierarchical team structure and multidimensional localization (or siloing) on networks

Laurent Hébert-Dufresne, Guillaume St-Onge, John Meluso, James Bagrow, Antoine Allard

J. phys. Complex. 4, 35002 (2023)

Source-sink behavioural dynamics limit institutional evolution in a group-structured society

Laurent Hébert-Dufresne, Timothy M. Waring, Guillaume St-Onge, Meredith T. Niles, Laura Kati Corlew, Matthew P. Dube, Stephanie J. Miller, Nicholas Gotelli, Brian J. McGill

R. Soc. Open Sci. 9, 211743 (2022)

Influential groups for seeding and sustaining nonlinear contagion in heterogeneous hypergraphs

Guillaume St-Onge, Iacopo Iacopini, Vito Latora, Alain Barrat, Giovanni Petri, Antoine Allard, Laurent Hébert-Dufresne

Commun. Phys. 5, 25 (2022)

Universal Nonlinear Infection Kernel from Heterogeneous Exposure on Higher-Order Networks

Guillaume St-Onge, Hanlin Sun, Antoine Allard, Laurent Hébert-Dufresne, Ginestra Bianconi

Phys. Rev. Lett. 127, 158301 (2021)

Social Confinement and Mesoscopic Localization of Epidemics on Networks

Guillaume St-Onge, Vincent Thibeault, Antoine Allard, Louis J. Dubé, Laurent Hébert-Dufresne

Phys. Rev. Lett. 126, 098301 (2021)

Inference, Model Selection, and the Combinatorics of Growing Trees

George T. Cantwell, Guillaume St-Onge, Jean-Gabriel Young

Phys. Rev. Lett. 126, 038301 (2021)

Master equation analysis of mesoscopic localization in contagion dynamics on higher-order networks

Guillaume St-Onge, Vincent Thibeault, Antoine Allard, Louis J. Dubé, Laurent Hébert-Dufresne

Phys. Rev. E 103, 32301 (2021)

Localization, epidemic transitions, and unpredictability of multistrain epidemics with an underlying genotype network

Blake J. M. Williams, Guillaume St-Onge, Laurent Hébert-Dufresne

PLOS Comput. Biol. 17, e1008606 (2021)

Threefold way to the dimension reduction of dynamics on networks: an application to synchronization

Vincent Thibeault, Guillaume St-Onge, Louis J. Dubé, Patrick Desrosiers

Phys. Rev. Research 2, 043215 (2020)

Network comparison and the within-ensemble graph distance

Harrison Hartle, Brennan Klein, Stefan McCabe, Alexander Daniels, Guillaume St-Onge, Charles Murphy, Laurent Hébert-Dufresne

Proc. Math. Phys. Eng. Sci 476, 20190744 (2020)

Thresholding normally distributed data creates complex networks

George T. Cantwell, Yanchen Liu, Benjamin F. Maier, Alice C. Schwarze, Carlos A. Serván, Jordan Snyder, Guillaume St-Onge

Phys. Rev. E 101, 062302 (2020)

Phase Transition in the Recoverability of Network History

Jean-Gabriel Young, Guillaume St-Onge, Edward Laurence, Charles Murphy, Laurent Hébert-Dufresne, Patrick Desrosiers

Phys. Rev. X 9, 041056 (2019)

Efficient sampling of spreading processes on complex networks using a composition and rejection algorithm

Guillaume St-Onge, Jean-Gabriel Young, Laurent Hébert-Dufresne, Louis J. Dubé

Comput. Phys. Commun. 240, 30 (2019)

Universality of the stochastic block model

Jean-Gabriel Young, Guillaume St-Onge, Patrick Desrosiers, Louis J. Dubé

Phys. Rev. E 98, 030309 (2018)

Geometric evolution of complex networks with degree correlations

Charles Murphy, Antoine Allard, Edward Laurence, Guillaume St-Onge and Louis J. Dubé

Phys. Rev. E 97, 032309 (2018)

Phase transition of the susceptible-infected-susceptible dynamics on time-varying configuration model networks

Guillaume St-Onge, Jean-Gabriel Young, Edward Laurence, Charles Murphy, Louis J. Dubé

Phys. Rev. E 97, 022305 (2018)

Exact vectorial model for nonparaxial focusing by arbitrary axisymmetric surfaces

Denis Panneton, Guillaume St-Onge, Michel Piché, and Simon Thibault

J. Opt. Soc. Am. 33, 801 (2016)

Needles of light produced with a spherical mirror

Denis Panneton, Guillaume St-Onge, Michel Piché, and Simon Thibault

Opt. Lett. 4, 419 (2015)

Processus de contagion sur réseaux complexes au-delà des interactions dyadiques

Contagion processes on complex networks beyond dyadic interactions

Guillaume St-Onge

Ph.D. thesis · 2022

Dynamiques de propagation sur réseaux aléatoires: caractérisation de la transition de phase

Propagation dynamics on random networks: characterization of the phase transition

Guillaume St-Onge

M.Sc. thesis · 2017