To date, 48 countries and territories in the Americas have confirmed autochthonous, vectorborne transmission of Zika virus disease since 2015.
In addition, five countries in the Americas have reported sexually transmitted Zika cases. Since the last Zika Epidemiological Update of 17 November 2016, no new country or territory has confirmed vector-borne autochthonous transmission of Zika virus in the Americas.
Highlighted below is a summary of the epidemiological situation by sub-regions of the Americas.
North America
In Mexico, a slight downward trend has been observed during the last four epidemiological weeks (EW).
In the United States of America, no cases of local transmission were detected in the last 45 days in the northern area of Miami-Dade County; however, active transmission continues in the Miami Beach area.
Separately, on 28 November, the Texas Department of State Health Services and Cameron County Department of Health and Human Services announced the first autochthonous case of Zika likely transmitted by a mosquito in Texas.
Central America
In Panama, after an increasing trend of cases between EW 32 and EW 41 of 2016, a downward trend has been observed in the last four weeks (EW 42 to EW 45). In the other countries of Central America, the trend continues to decrease.
Caribbean
In Saint Martin and Saint Barthelemy, French overseas territories, the virus continues to circulate actively and the evolution of the epidemic will have to be observed over the next few weeks.
Other countries/territories in the Caribbean, a downward trend in the number of Zika cases continues.
South America
In Peru, since EW 21 of 2016, an active outbreak continues in Iquitos City with an increasing trend. The cases are distributed in the four districts of the city.
All the other countries / territories in South America continue to report decreasing numbers of Zika cases.