Between 8 October and 16 October 2015, the National IHR Focal Points of Brazil and Colombia notified PAHO/WHO of cases of Zika virus infection. Brazil In May 2015, the public health authorities of Brazil confirmed autochthonous transmission of Zika virus in the northeastern part of the country. As of 8 October, autochthonous cases of Zika virus had been detected in 14 states: Alagoas, Bahia, Ceará, Maranhão, Mato Grosso, Pará, Paraná, Paraíba, Pernambuco, Piauí, Rio de Janeiro, Rio Grande do Norte, Roraima, and São Paulo.