Microcephaly: Zika Virus Infection

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2017
  • 25 August 2017: Zika – Epidemiological Update

    25 August 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease, while five countries have reported sexually transmitted Zika cases. 

  • 26 July 2017: Zika - Epidemiological Update

    25 May 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease, while five countries have reported sexually transmitted Zika cases.

  • 25 May 2017: Zika - Epidemiological Update

    25 May 2017: Zika – Epidemiological Update

    To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease, while five countries have reported sexually transmitted Zika cases. Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease.

  • 27 April 2017: Zika – Epidemiological Update

    12 January 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease since 2015,1 while five countries have reported sexually transmitted Zika cases.

  • 10 March 2017: Zika - Epidemiological Update

    9 March 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus since 2015. In addition, five countries in the Americas have reported sexually transmitted Zika cases. 

  • 9 February 2017: Zika - Epidemiological Update

    9 February 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease since 2015. In addition, five countries in the Americas have reported sexually transmitted Zika cases.

  • 26 January 2017: Zika - Epidemiological Update

    12 January 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease since 2015. In addition, five countries in the Americas have reported sexually transmitted Zika cases.

  • 12 January 2017: Zika - Epidemiological Update

    12 January 2017: Zika – Epidemiological Update

    Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease. To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease since 2015. In addition, five countries in the Americas have reported sexually transmitted Zika cases. 

2016
  • 29 December 2016: Zika - Epidemiological Update

    17 November 2016: Zika – Epidemiological Update

    To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne 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 15 December 2016, no new country or territory has confirmed vector-borne autochthonous transmission of Zika virus in the Americas.

  • 15 December 2016: Zika - Epidemiological Update

    15 December 2016: Zika – Epidemiological Update

    To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne 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 1 December 2016, no new country or territory has confirmed vector-borne autochthonous transmission of Zika virus in the Americas.
  • 1 December 2016: Zika - Epidemiological Update

    1 December 2016: Zika – Epidemiological Update

    To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease since 2015.[1] In addition, five countries in the Americas have reported sexually transmitted Zika cases.[2] 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.

  • 17 November 2016: Zika - Epidemiological Update

    17 November 2016: Zika – Epidemiological Update

    To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne 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 3 November 2016, Montserrat has confirmed vector-borne autochthonous transmission of Zika virus in the Americas.

  • 03 November 2016: Zika - Epidemiological Update

    03 November 2016: Zika – Epidemiological Update

    To date, 47 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease since 2015.1 In addition, five countries in the Americas have reported sexually transmitted Zika cases.Since the last Zika Epidemiological Update of 20 October 2016, no additional countries and/or territories have confirmed vector-borne autochthonous transmission of Zika virus in the Americas.

  • 20 October 2016: Zika – Epidemiological Update

    20 October 2016: Zika – Epidemiological UpdateTo date, 47 countries and territories in the Americas have confirmed autochthonous, vector-borne 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 6 October 2016, no additional countries and/or territories have confirmed vector-borne autochthonous transmission of Zika virus in the Americas.

  • 6 October 2016: Zika – Epidemiological Update

    6 October 2016: Zika – Epidemiological UpdateTo date, 47 countries and territories in the Americas have confirmed autochthonous, vector-borne 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 22 September 2016, no additional countries and/or territories have confirmed vector-borne autochthonous transmission of Zika virus in the Americas.

  • 22 September 2016: Zika – Epidemiological Update

    22 September 2016: Zika – Epidemiological Update

    To date, 47 countries and territories in the Americas have confirmed autochthonous, vector-borne 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 8 September 2016, Saint Kitts and Nevis has confirmed vector-borne autochthonous transmission of Zika virus (Figure 1).  

  • 8 September 2016: Zika – Epidemiological Update

    29 July 2016: Zika - Epidemiological Update

    To date, 46 countries and territories have confirmed autochthonous, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015.  In addition, five countries in the Americas have reported sexually transmitted Zika cases.  Since the last Zika Epidemiological Update of 25 August 2016, the British Virgin Islands have confirmed vector-borne autochthonous transmission of Zika virus (Figure 1).

  • 25 August 2016: Zika – Epidemiological Update

    29 July 2016: Zika – Epidemiological Update

    To date, 45 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015.[1]  In addition, five countries in the Americas have reported sexually transmitted Zika cases.[2]  Since the last Zika Epidemiological Update of 11 August 2016, no additional countries or territories in the Americas have confirmed vector-borne autochthonous transmission of Zika virus (Figure 1)
  • 11 August 2016: Zika – Epidemiological Update
    29 July 2016: Zika – Epidemiological UpdateTo date, 45 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015.[1] In addition, five countries in the Americas have reported sexually transmitted Zika cases.[2] Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 29 July 2016, the Bahamas, the Cayman Islands, and the United States of America have confirmed vector-borne autochthonous transmission of Zika virus (Figure 1).
  • 29 July 2016: Zika – Epidemiological Update

    29 July 2016: Zika – Epidemiological Update

    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.

  • 14 July 2016: Zika – Epidemiological Update

    14 July 2016: Zika – Epidemiological Update

    To date, 40 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015. 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 7 July 2016, no additional countries or territories have confirmed vector-borne autochthonous transmission of Zika virus (Figure 1).

  • 7 July 2016: Zika – Epidemiological Update

    7 July 2016: Zika – Epidemiological Update

    To date, 40 countries and territories have confirmed local, vectorial transmission of Zika virus disease in the Region of the Americas since 2015 (Figure 1). In addition, five countries in the Americas have reported Zika cases by sexual transmission (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 30 June 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus. In review of the respective last four weeks of reported data, an increasing trend in cases has been observed in Costa Rica, French Guiana, Guadeloupe, Guatemala, Jamaica, Mexico, Puerto Rico, Saint Barthelemy, and Saint Martin.

  • 30 June 2016: Zika – Epidemiological Update

    30 June 2016: Zika – Epidemiological Update

    To date, 40 countries and territories have confirmed local, vectorial transmission of Zika virus disease in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 23 June 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus.

  • 23 June 2016: Zika - Epidemiological Update (Corrigendum)

    23 June 2016: Zika Virus Infection - Epidemiological Update (Corrigendum)

    To date, 40 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 16 June 2016, Anguilla has confirmed vector-borne autochthonous transmission of Zika virus.

  • 16 June 2016: Zika - Epidemiological Update

    16 June 2016: Zika Virus Infection - Epidemiological Update

    To date, 39 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 9 June 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus.

  • 9 June 2016: Zika - Epidemiological Update

    9 June 2016: Zika Virus Infection - Epidemiological Update

    To date, 39 countries and territories have confirmed local, vector-borne transmission of Zika virus disease in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 2 June 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus.

  • 2 June 2016: Zika - Epidemiological Update

    2 June 2016: Zika Virus Infection - Epidemiological Update

    To date, 39 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 26 May 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus.

  • 26 May 2016: Zika - Epidemiological Update

    26 May 2016: Zika Virus Infection - Epidemiological Update

    To date, 39 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 19 May 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus.

  • 19 May 2016: Zika - Epidemiological Update

    19 May 2016: Zika Virus Infection - Epidemiological Update

    To date, 39 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 12 May 2016, Argentina has confirmed vector-borne autochthonous transmission of Zika virus.

  • 12 May 2016: Zika - Epidemiological Update

    12 May 2016: Zika Virus Infection - Epidemiological Update

    To date, 38 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 5 May 2016, no additional countries or territories confirmed vector-borne autochthonous transmission of Zika virus.

  • 5 May 2016: Zika - Epidemiological Update

    28 April 2016: Zika Virus Infection - Epidemiological Update

    To date, 38 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update on 28 April, Grenada, Peru, and Saint Barthélemy have confirmed vector-borne autochthonous transmission of Zika virus.

  • 28 April 2016: Zika - Epidemiological Update

    To date, 35 countries and territories have confirmed local, vector-bornetransmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Sincethe last Pan American Health Organization/ World Health Organization (PAHO/WHO)ZikaEpidemiological Update on 21 April, no new countriesor territories have confirmed vector-borne autochthonous transmission of Zikavirus.

  • 21 April 2016: Zika - Epidemiological Update

    21 April 2016: Zika Virus Infection - Epidemiological Update

    To date, 35 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Since the last Pan American Health Organization/ World Health Organization (PAHO/WHO) Zika Epidemiological Update of 14 April, no new countries or territories have confirmed vector-borne autochthonous transmission of Zika virus.

  • 14 April 2016: Zika - Epidemiological Update

    14 April 2016: Zika Virus Infection - Epidemiological Update

    To date, 35 countries and territories have confirmed local, vector-borne transmission of Zika virus in the Region of the Americas since 2015 (Figure 1). Belize is investigating a potential case of autochthonous transmission reported by another country.

  • 31 March 2016: Zika - Epidemiological Update

    31 March 2016: Zika Virus Infection - Epidemiological Update

    Since the detection of Zika virus in Brazil in 2015 to date, 33 countries and territories 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.

  • 24 March 2016: Zika - Epidemiological Update

    24 March 2016: Zika Virus Infection - Epidemiological Update

    Overall, reporting of Zika virus cases in the Region of the Americas is still showing a downward trend which is also observed with the other arbovirus circulating in the Region as shown in Colombia, El Salvador, and Honduras (Figure 1). This trend could change due to delays in reporting when retrospective data is received.

  • 17 March 2016: Zika - Epidemiological Update

    17 March 2016: Zika Virus Infection - Epidemiological Update

    Available data reported suggests a downward trend in reporting of Zika virus cases in the Region of the Americas. However, some countries and territories (Dominican Republic, French overseas collectivities in the Americas, Haiti, and Venezuela) are experiencing an increase in Zika virus reports. Due to delays in reporting and further geographic spread of Zika virus to areas that have the vector-mosquito capable of transmission, the epidemiological curve is subject to change.

  • 10 March 2016: Zika - Epidemiological Update

    10 March 2016: Zika Virus Infection - Epidemiological Update

    Since last update (3 March 2016), no additional countries/territories have reported autochthonous (locally acquired) confirmed cases of Zika virus (ZIKV) infection in the Region of the Americas. Thirty-one countries/territories in the Americas have confirmed autochthonous cases of ZIKV infection

  • 3 March 2016: Zika - Epidemiological Update

    3 March 2016: Zika Virus Infection - Epidemiological Update

    Since last update (February 24, 2016), no additional countries/territories have reported autochthonous (locally acquired) confirmed cases of Zika virus (ZIKV) infection. Thirty-one countries / territories in the Americas have autochthonous confirmed cases of ZIKV infection.
  • 24 February 2016: Zika - Epidemiological Update

    24 February 2016: Zika Virus Infection - Epidemiological Update

    Since last update (February 18, 2016), three additional countries/territories have reported their first autochthonous (locally-acquired) confirmed cases of ZIKV: Saint Maarten (Kingdom of the Netherlands), Saint Vincent and the Grenadines, and Trinidad and Tobago. This brings to 31 the number of countries / territories in the Americas reporting autochthonous, confirmed ZIKV.
  • 17 February 2016: Zika - Epidemiological Update

    1 December 2015: Neurological syndrome, congenital malformations, and Zika virus infection. Implications for public health in the Americas – Epidemiological Alert

    During Epidemiological Week 6 of 2015, two new additional countries/territories have reported laboratory-confirmed autochthonous (local) transmission of Zika virus: Aruba and Bonaire, bringing the Regional total to 28 countries and territories reporting local transmission of Zika virus.
  • 10 February 2016: Reported increase of congenital microcephaly and other central nervous system symptoms - Epidemiological Update

    Brazil 

    In July 2015, Brazil reported the detection of patients with neurological syndromes who had recent history of Zika virus infection in the state of Bahia. There were 76 patients with neurological syndromes identified of which 42 (55%) were confirmed as Guillain-Barré Syndrome (GBS). Among the confirmed cases of GBS, 26 (62%) had a history of symptoms consistent with Zika virus infection. In addition, 7 patients presenting with neurologic syndromes were confirmed to be positive for Zika virus infection in November 2015. In 2015, a total of 1708 cases of GBS have been registered nationwide, representing a 19% increase from the previous year (1,439 cases).

  • 17 January 2016: Neurological syndrome, congenital malformations, and Zika virus infection – Epidemiological Update

    1 December 2015: Neurological syndrome, congenital malformations, and Zika virus infection. Implications for public health in the Americas – Epidemiological Alert

    Given the increase of congenital anomalies, Guillain-­Barré syndrome, and other neurological and autoimmune syndromes in areas where Zika virus is circulating, the Pan American Health Organization / World Health Organization (PAHO/WHO) recommends its Member States establish and maintain the capacity to detect and confirm Zika virus cases, prepare healthcare facilities to respond to a possible increase demand of specialized care for neurological syndromes, as well to strengthen antenatal care. In addition, Member States are urged to continue with their efforts to reduce the presence of mosquito vectors through an effective vector control strategy and communication to the public.
2015
  • 1 December 2015: Neurological syndrome, congenital malformations, and Zika virus infection. Implications for public health in the Americas – Epidemiological Alert

    1 December 2015: Neurological syndrome, congenital malformations, and Zika virus infection. Implications for public health in the Americas – Epidemiological Alert

    Given the increase of congenital anomalies, Guillain-Barré syndrome, and other neurological and autoimmune syndromes in areas where Zika virus is circulating and their possible relation to the virus, the Pan American Health Organization / World Health Organization (PAHO/WHO) recommends its Member States establish and maintain the capacity to detect and confirm Zika virus cases, prepare healthcare facilities for the possible increase in demand at all healthcare levels and specialized care for neurological syndromes, and to strengthen antenatal care. In addition, Member States should continue efforts to reduce the presence of mosquito vectors through an effective vector control strategy and public communication.
  • 17 November 2015: Increase of microcephaly in the northeast of Brazil - Epidemiological Alert

    Given the unusual increase in cases of microcephaly in some northeast states of Brazil, the Pan American Health Organization (PAHO) / World Health Organization (WHO) calls upon Member States to remain alert to the occurrence of similar events in their territories and to notify its occurrence through the channels established under the International Health Regulations (IHR).

  • 16 October 2015: Zika – Epidemiological Update

    Given the increased transmission of Zika virus in the Region of the Americas, the Pan American Health Organization/World Health Organization (PAHO/WHO) recommends that its Member States establish and maintain the capacity to detect and confirm cases of Zika virus infection, prepare their health services for a potential additional burden at all levels of health care, and implement an effective public communications strategy to reduce the mosquitoes that transmit this disease, particularly in areas where this vector is present.

  • 7 May 2015: Zika - Epidemiological Alert

    Epidemiological Alerts and Updates

    The Pan American Health Organization (PAHO) / World Health Organization (WHO) recommends its Member States establish and maintain the capacity for Zika virus infection detection, clinical management and an effective public communication strategy to reduce the presence of the mosquito that transmits this disease, particularly in areas where the vector is present.

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