A baby was born with Zika-related microcephaly at a United States hospital on Tuesday.
A woman visiting the country from Honduras gave birth to the baby, who has an abnormally small head because of the mosquito-borne virus, at a New Jersey hospital.
"The mother is stable, obviously sad, which is the normal emotional reaction given the situation," Dr. Abdulla Al-Khan, director of maternal and fetal medicine at Hackensack University Medical Center, told CNN.
The child was diagnosed with microcephaly while still in the womb. Doctors called it "significant" with calcification and dilated ventricles of the brain.
Doctors have zeroed in on Zika as the cause of the abnormality after ruling out other causes.
The mother has asked to remain anonymous.
Hers was not the first baby born with the abnormality in the United States.
Back in January, before doctors definitively named Zika as the cause of microcephaly cases, a woman in Hawaii had a baby with the birth defect after becoming infected with the virus in Brazil.
And last month, officials identified a fetus in Puerto Rico with severe microcephaly as the first case linked to local transmission.