%0 Case Reports %T Yellow fever surveillance challenge: Investigation of a marmoset non-autochthonous case. %A Fernandes NCCA %A Guerra JM %A Cunha MS %A Beraldo KRF %A Ressio RA %A Cirqueira CDS %A Agostini TL %A de Camargo JP %A Landi NCSF %A Saad LDC %A Spinola RMF %A de Paula RAC %A Sanches TC %A Rivas L %A Catão-Dias JL %J Acta Trop %V 212 %N 0 %D Dec 2020 %M 32971069 %F 3.222 %R 10.1016/j.actatropica.2020.105702 %X Yellow fever (YF) surveillance in Brazil is focused mainly on the detection of epizootic events regarding New World non-human primates (NWNHP). We present a challenging case of a Callitrichidae (Callithrix spp) kept as a domiciliated pet that lived in the urban area of São Paulo municipality and was positive to YF virus by RT-qPCR and immunohistochemistry. After investigation, it was the first occurrence of non-autochthonous YF case of NWNHP described, with probable place of infection in the North shore of São Paulo state. This case illustrates the importance of coordinated laboratorial and field actions, and risks posed by transit of wildlife.