Zika virus – Incidence and trends
To date, 42 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015: Anguilla; Antigua and Barbuda; Argentina; Aruba; Barbados; Belize; Bolivia (Plurinational State of); Bonaire, Sint Eustatius, and Saba; Brazil; Colombia; Costa Rica; Cuba; Curaçao; Dominica; the Dominican Republic; Ecuador; El Salvador; French Guiana; Grenada; Guadeloupe; Guatemala; Guyana; Haiti; Honduras; Jamaica; Martinique; Mexico; Nicaragua; Panama; Paraguay; Peru; Puerto Rico; Saint Barthélemy; Saint Lucia; Saint Martin; Saint Vincent and the Grenadines; Sint Maarten; Suriname; Trinidad and Tobago; Turks and Caicos Islands; the United States Virgin Islands; and Venezuela (Bolivarian Republic of). In addition, five countries in the Americas have reported sexually transmitted Zika cases (Argentina, Canada, Chile, Peru, and the United States of America). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 14 July 2016, Antigua and Barbuda and the Turks and Caicos Islands confirmed vector-borne autochthonous transmission of Zika virus (Figure 1).
Additionally, Canada has reported 169 travel-related Zika virus disease cases detected as of 28 July 2016.
On 29 July 2016, the United States’ Centers for Disease Control and Prevention (CDC) reported the detection of four cases of Zika virus infections that were likely caused by bites of local Aedes aegypti mosquitoes in the state of Florida. CDC is closely coordinating with Florida officials who are leading the ongoing investigations (see full press release)
On 21 July 2016, the Oswaldo Cruz Foundation (Fiocruz) informed of the preliminary results of an entomological investigation in the state of Pernambuco where researchers detected the presence of Culex quinquefasciatus infected with Zika virus via quantitative RT-PCR. The mosquitoes were collected around residences of reported cases of Zika virus disease in Recife and Acroverde in the state of Pernambuco. See full report.
In the last four weeks of reported data, an increasing trend in cases has been observed in Costa Rica, Ecuador, Guatemala, Jamaica, Mexico, Nicaragua, Puerto Rico, Saint Barthelemy, Saint Martin, the U.S. Virgin Islands, and Venezuela.