From 2015 to 2016, an epidemic of births of children with Congenital Zika Virus Syndrome emerged in Brazil, and the state of Bahia concentrated the highest incidence of cases. The official health guidelines recommended that the affected children and their families should be supported by interdisciplinary teams of early intervention. This paper aims to deepen the comprehension of regulation and affective-semiotic mediation processes involved in the early intervention with children with Congenital Zika Virus Syndrome and their families. It focus on the experiences of a professional interviewed in a public health service in Salvador, Bahia – Brazil, through narrative analysis and the theoretical-methodological foundations of Cultural Psychology of the Semiotic Dynamics. These approaches allowed the understanding of the processes of construction of meanings, symbolic action and affective-semiotic regulation. The care of Congenital Zika Virus Syndrome children by professionals relates to disquieting experiences, inter subjectivity, meaning construction, affections and symbolic actions. These dynamic processes allowed the professional to better adapt to regulation and affective-semiotic mediation, as well as her own performance in face of children and their families. This analysis emphasizes the reflections of health care practices and their repercussions in the quality of the assistance.