Return of the founder Chikungunya virus to its place of introduction into Brazil is revealed by genomic characterization of exanthematic disease cases by Pereira Gusmão Maia, Z, Mota Pereira, F, do Carmo Said, RF, Fonseca, V, Gräf, T, de Bruycker Nogueira, F, Brandão Nardy, V, Xavier, J, Lima Maia, M, Abreu, AL, Campelo de Albuquerque, CF, Kleber Oliveira, W, Croda, J, Bispo de Filippis, AM, Cunha, RV, Lourenço, JM, de Oliveira, T, Faria, NR, Alcantara, LCJ, Giovanetti, M