Zika virus – Incidence and trends
Since the detection of Zika virus in Brazil in 2015 to date, 33 have confirmed autochthonous vector-borne transmission of Zika virus in the Region of the Americas (Figure 1). No new countries or territories have confirmed vector-borne transmission in the preceding two weeks.
Sexual transmission of Zika virus
The most prominent mode of transmission of Zika virus is vector-borne. However, during this epidemic, surveillance system in countries without autochthonous circulation of Zika virus or presence of the vector mosquito detected cases of Zika virus via sexual transmission. For all eight cases described below, transmission occurred in partners who had sexual contact with men who had history of travel to countries reporting Zika virus circulation, and all of them presented Zika virus symptoms shortly before or at the time of sexual contact.