>> Zika twins in Brazil under the microscope as scientist look to unveil the mysteries of the epidemic. They're now looking at twin like 5-month old Lucas and Laura. He was born healthy, she was born with microcephaly, a birth defect associated with the virus in which babies have abnormally small heads, they're among five sets of twins being studied in Sáo Paulo.
Reuters' Health Editor, Michelle Gershburg.>> There are two theories for how it could have happened that are being investigated and one of them is whether or not they were some difference in the way in which the Zika virus may have crossed the placenta. Another question is whether or not genetic differences in the babies can account for a different reaction to the virus.
>> Since it's outbreak last year, Brazil has registered nearly 5,000 confirmed and suspected cases of microcephaly associated with Zika. It's impact on pregnant women has cast a shadow over the upcoming Summer Olympics. Lucas and Laura's mother first got the bad news during a routine ultrasound now Laura needs regular treatment by a team of neurologists and physiotherapists.
> The important thing is that I look after her. So I prefer that God gave her to me rather than to someone else who was incapable of looking after her, because I feel capable of looking after her.>> Scientists hope to have results from the twins' investigation in a year's time.