Other new reports detail co-infections with other mosquito-borne viruses and fatal encephalitis.
With new cases reported, federal and global health officials decry shortages in response funding.
Researchers describe congenital hearing loss associated with Zika in infants born with microcephaly.
Scientists saw potential in some existing drugs and showed that mosquitoes can pass the virus to their offspring.
Also, another diagnostic test received an EUA and a vaccine trial launched in Puerto Rico.
No new local cases were reported in Florida for a second day, and studies revealed more on sexual transmission risks in asymptomatic infections, GBS patterns in Puerto Rico, and early problems for infected babies.
A mouse study shows that the virus replicates in vaginal tissue for several days, while CDC officials report increasing case numbers.
In another development today, the CDC announced $6.8 million more to help with outbreak response.
The money will be spent on added staff, spraying, and community outreach.
A 2nd confirmed transmission area in Miami causes federal officials to expand their travel advisory and alert health providers of the risks.
