What lab did this emerge from?
Virus isolation in monkeys and mosquitoes, 1947
The virus was first isolated in April 1947 from a rhesus macaque monkey that had been placed in a cage in the Zika Forest of Uganda, near Lake Victoria, by the scientists of the Yellow Fever Research Institute.[73] A second isolation from the mosquito A. africanus followed at the same site in January 1948.[74] When the monkey developed a fever, researchers isolated from its serum a “filterable transmissible agent” that was named Zika in 1948.[21][75]
Wikipedia
Unknown lab.
The statement came from CDC officials, who I am sure have statisticians on their staff. Given the recent increase in Zika numbers, I believe that the 25 % infection rate is what they expect to see this year.