BBC – The US Centers for Disease Control and Prevention (CDC) has confirmed that the Zika virus causes severe birth defects, including microcephaly.
Hundreds of babies were born in Brazil last year with microcephaly, a syndrome where children are born with unusually small heads.
The defects coincided with a spike in Zika infections, leading experts to suspect the mosquito-borne virus.
Research has now affirmed those experts’ suspicions, the CDC said.
“This study marks a turning point in the Zika outbreak. It is now clear that the virus causes microcephaly,” said Dr Tom Frieden, the head of the CDC.
On Monday, US health officials warned the Zika outbreak could have more of an effect on the United States and called for additional funding to combat the virus.
“Everything we know about this virus seems to be scarier than we initially thought,” said Dr Anne Schuchat of the CDC.
Zika virus was first diagnosed in 1947 in Uganda, but symptoms have typically been mild, including rash, joint pain and fever.
The current outbreak started in 2015 in Brazil and the symptoms have been much more severe. Nearly 200 babies have died as result of the virus.
Researchers are interesting learning why some cases of the virus result in birth defects while others do not.
Some women who were infected with Zika while pregnant gave birth to apparently healthy children.