"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," the report summarized.
In the past week Montserrat and Palau joined the list of countries and territories who have reported cases of the mosquito-borne infection.
The fifth meeting of the Emergency Committee on Zika virus, microcephaly and other neurological disorders will be held on November 18.
The virus is spread by the Aedes mosquito, which is common in tropical areas of the Americas. Zika poses little threat to the general population, but is suspected of leading to severe brain defects and cases of microcephaly in newborns.