A CDC expert says US spread will likely be localized but calls for better mosquito control.
Zika outbreaks are getting high-level attention, and Brazil reports 287 new microcephaly cases.
The guidance covers testing of newborns, and the Virgin Islands and DR are now on the travel advisory.
All areas that harbor Aedes are vulnerable, and the Dominican Republic now has a local case.
The CDC adds 8 more destinations to its travel alert, as experts assess the threat.
El Salvador notes a GBS spike that may be linked to Zika, and St. Martin and Guadeloupe report their first local cases.
Shortly after the Centers for Disease Control and Prevention (CDC) released guidance on Zika virus infection and pregnancy yesterday, Illinois officials reported two imported cases in pregnant women, a potential risk for birth defects.
PAHO, meanwhile, said the virus has expanded its reach and cautioned about Guillain-Barre syndrome.
The CDC is weighing a warning specifically for pregnant travelers, and federal experts say other mosquito-borne diseases can complicate diagnoses.
For the second day in a row, Saudi Arabia's Ministry of Health (MOH) reported a new MERS-CoV case, and like yesterday the patient is a man who had contact with camels before he got sick.
The 50-year-old man is a Saudi citizen from Medina, located in the western part of the country. The man is hospitalized in stable condition for his MERS-CoV (Middle East respiratory syndrome coronavirus) infection.
