Experts cite virus mutations, rapid construction, guest workers, and dengue as possible factors in the recent surge of cases.
In other developments, industry reps raise concerns about the impact on businesses, as Florida's local case total continues to rise.
Malaysia and Singapore give more details on local cases, while a new study from Europe shows uneven surveillance for microcephaly.
Also, the case of an infected father and son underscores prevention in close contacts.
In other developments, Thailand and Singapore report several new Zika cases.
Also, officials report sexual transmission in Pennsylvania and the Netherlands.
Also, Singapore said it's not clear yet if the Asian strain involved in its local spread will result in the severe complications.
Also, Miami Beach is planning for aerial spraying, while an mRNA vaccine gets funding.
Also today, research highlighted eye infections in mice and brain injury in human babies.
Also, the CDC announced $2.4 million to help large cities detect and manage birth defects, and researchers revealed possible differences in brain cell infections between the 2 Zika lineages.
