Updates

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15 Sep 2016 description

KEY UPDATES

 Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:

o None

 Countries in the Western Pacific Region have been reporting new cases as seen in Singapore, Philippines and Malaysia.

 Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:

o None

08 Sep 2016 description

Key Updates

Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:

o None

 Malaysia, which previously reported Zika infections in 2014, has reported new mosquito-borne Zika virus infections in the past week

 Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:

o None

25 Aug 2016 description

KEY UPDATES

  • Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:

  • None

  • Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:

  • Costa Rica, Dominican Republic and Haiti

04 Aug 2016 description

As of 3 August 2016, 68 countries and territories (Fig. 1, Table 1) have reported evidence of mosquito-borne Zika virus transmission since 2007 (65 of these countries and territories have reported evidence of mosquito-borne Zika virus transmission since 2015):

28 Jul 2016 description

As of 27 July 2016, 67 countries and territories have reported evidence of mosquito-borne Zika virus transmission since 2007 (64 of these countries and territories have reported evidence of mosquito-borne Zika virus transmission since 2015):

22 Jul 2016 description
  • The World Health Organization (WHO) and partners established a definition of what constitutes an outbreak, endemic transmission, and the interruption of mosquito-borne transmission in order to better characterize the level of transmission of Zika virus infection (Table 1, Fig. 2). This classification system was put into use as of the situation report of 7 July 2016.

21 Apr 2016 description

SUMMARY

From 1 January 2007 to 20 April 2016, Zika virus transmission was documented in a total of 66 countries and territories.

Mosquito-borne transmission:

  • 42 countries are experiencing a first outbreak of Zika virus since 2015, with no previous evidence of circulation, and with ongoing transmission by mosquitos.

  • 17 countries have reported evidence of Zika virus transmission prior to 2015, with or without ongoing transmission or have reported an outbreak since 2015 that is now over.