Why Didn't Zika Cause A Surge In Microcephaly In 2016?
Scientists predicted that more than 1,000 babies would be born with the birth defect in Brazil last year. That never happened. Why?
Back in 2015, Brazil reported a horrific a surge in birth defects. Thousands of babies were born with brain damage and abnormally small heads, a condition called microcephaly.
Scientists quickly concluded the Zika virus was the culprit. So when Zika returned last year during Brazil's summer months of December, January and February — when mosquitoes are most active — health officials expected another surge in microcephaly cases.
But that never happened.
"We apparently saw a lot of the World Health Organization.
