Fast surveillance response reveals the introduction of a new yellow fever virus sub-lineage in 2021, in Minas Gerais, Brazil.

"To the contributions of the Divisão de Vigilância Sanitária e Ambiental from MG, to the effort of the Grupo de Vigilância da Febre Amarela of MG that was at the forefront of the preparation for virus outbreak response and field investigations, to Beatrízio Rodrigues Almeida, Hermes Almeida and Joselio Ribeiro Paraíso, for their valuable help during the field work, to Aline Tátila Ferreira, for her help in creating images, to Fernando Lucas Melo, for their valuable help with genome sequencing, to countless colleagues from municipalities’ health departments, who conducted the investigation of epizootics collecting samples in the field and to the Coordenação-Geral de Vigilância Arboviroses, Brazilian Ministry of Health. The Febre Amarela BR project (https://www.febreamarelabr.com.br/) is supported by grants from Conselho Nacional de Desenvolvimento Científico e Tecnológico/Departamento de Ciência e Tecnologia/Secretaria de Ciência, Tecnologia e Insumos Estratégicos/Brazilian Ministry of Health (CNPq/Decit/SCTIE/MS) (grant number 443215/2019-7). MSA is granted a post-doctoral scholarship (DTI-A) from CNPq. ACF, FSC, BMR and PMR are CNPq research fellows. FVSA is on receipt of a grant (APQ-01403-21) from Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) and (21/2020) from Instituto Federal do Norte de Minas Gerais (IFNMG). Financial support: CNPq/Decit/SCTIE/MS (grant 443215/2019-7)."