Port of Spain, Trinidad and Tobago. February 2, 2016. On February 1st, 2016, Dr. Margaret Chan, Director General of the World Health Organization (WHO), declared that clusters of microcephaly and other neurological disorders potentially linked to the spread of the Zika virus (ZIKV) represents a Public Health Emergency of International Concern (PHEIC). The need for the Caribbean region to continue its ongoing and coordinated response to the threat of Zika virus (ZIKV) and any potentially associated risk has been reinforced by this, the fourth-ever such declaration. Read more.