Chikungunya virus infection in the southernmost state of Brazil was characterised by self-limited transmission (2017-2019) and a larger 2021 outbreak.
Tatiana Schäffer GregianiniRichard Steiner SalvatoRegina Bones BarcellosFernanda Marques GodinhoAmanda Pellenz RuivoViviane Horn de MeloJúlio Augusto SchroderFernanda Letícia MartinyErica Bortoli MöllmannCátia FavretoLudmila Fiorenzano BaethgenVithoria Pompermaier FerreiraLívia Eidt de LimaCláudia Fasolo PiazzaTaís Raquel Marcon MachadoIrina Marieta BeckerRaquel Rocha RamosGuilherme Carey FrölichAlana Fraga RossettiLucas da Cunha AlmeidaTahiana Machado Antunes RodriguesIsabella Tabelli BragançaAline Alves Scarpellini CamposVerônica Baú ManzoniLais Ceschini MachadoLuisa Maria Inácio da SilvaAndré Luiz Sá de OliveiraMarcelo Henrique Santos PaivaZenaida Marion Alves NunesPaula Rodrigues de AlmeidaMeriane DemolinerJuliana Schons GularteMariana Soares da SilvaMicheli FilippiVyctoria Malayhka de Abreu Góes PereiraFernando Rosado SpilkiAna Beatriz Gorini da VeigaGabriel da Luz WallauPublished in: Memorias do Instituto Oswaldo Cruz (2023)
Until 2020, CHIKV introductions were most travel associated and transmission was limited. Then, in 2021, the largest outbreak occurred in the state associated with the introduction of a new ECSA lineage. CHIKV outbreaks are likely to occur in the near future due to abundant competent vectors and a susceptible population, exposing more than 11 million inhabitants to an increasing infection risk.