WHO Zika Virus, Microcephaly and Guillain-Barré Syndrome Situation Report, 5 January 2017
This is the last weekly situation report. Going forward, the reports will be published every two weeks. The next report will be issued on 19 January.
Overall, the global risk assessment has not changed. Zika virus continues to spread geographically to areas where competent vectors are present. Although a decline in cases of Zika infection has been reported in some countries, or in some parts of countries, vigilance needs to remain high.
Seventy-five countries and territories (Fig. 1, Table 1) have reported evidence of mosquitoborne Zika virus transmission since 2007 (69 with reports from 2015 onwards), of which:
o Fifty-eight with a reported outbreak from 2015 onwards (Fig. 2, Table 1).
o Seven with having possible endemic transmission or evidence of local mosquitoborne Zika infections in 2016 or 2017.
o Ten with evidence of local mosquito-borne Zika infections in or before 2015, but without documentation of cases in 2016 or 2017, or with the outbreak terminated.
Thirteen countries have reported evidence of person-to-person transmission of Zika virus (Table 2).