A small number of early introductions seeded widespread transmission of SARS-CoV-2 in Québec, Canada.
Carmen Lía MurallEric FournierJose Hector GalvezArnaud N'GuessanSarah J ReilingPierre-Olivier QuirionSana NaderiAnne-Marie RoyShu-Huang ChenPaul StretenowichMathieu BourgeyDavid BujoldRomain GregoirePierre LepageJanick St-CyrPatrick WilletRéjean DionHugues CharestMark LathropMichel RogerGuillaume BourqueJiannis RagoussisB Jesse ShapiroSandrine MoreiraPublished in: Genome medicine (2021)
Combined, our results reinforce how, in the absence of tight travel restrictions or quarantine measures, fewer than 100 viral introductions in a week can ensure the establishment of extended transmission chains.