A US-based charity has found a cure to the Zika virus in a baby born in Puerto Rico who died days before she was due to be tested for it.
The baby was born with microcephaly, a condition in which the brain is smaller than normal, and died in hospital.
The charity, the Baby Hope Project, announced the news on Tuesday (local time) after the baby was flown back to the US on a private plane on Monday.
The cause of the baby’s death was suspected to be the Zika-infected virus.
It was unclear how long the baby would be alive without treatment.
The US Department of Health and Human Services (HHS) said in January it would begin distributing a Zika vaccine to Puerto Ricans as part of the National Response Plan.
But some experts say Puerto Ricos are still at risk.
The Zika virus was first identified in Brazil in 1947 and is now spreading rapidly in the Americas.
The number of confirmed cases of the virus has more than doubled since the beginning of the year.
In Puerto Rico, the virus first emerged in March, when Zika cases were first reported.
There are now over 1.2 million Zika infections reported in Puerto Ricas, according to the Health and Social Security Administration.
The virus has also affected people in other countries, including China, which has a population of about 2.5 million.
Health officials have said Puerto Rico’s outbreak could be halted as soon as the US government begins distributing vaccines.