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Microcephaly Cases in Brazil Predate Zika Virus Outbreak, Study Says

Zika and microcephaly questions

Cases may have been under-reported before the arrival of the virus

CLICK HERE - Microcephaly in northeastern Brazil: a review of 16 208 births between 2012 and 2015 (11 page .PDF file)

cbc.ca - February 10, 2016

Large numbers of babies with borderline normal head sizes were born in Brazil as far back as 2012, two years before the Zika virus is thought to have entered the country, say researchers searching for answers to urgent questions.

Pediatric cardiologist Dr. Sandra Mattos had been collecting data on 100,000 newborns in the Brazilian state of Paraiba as part of her work studying and treating congenital heart disease.

The microcephaly fears linked to the Zika virus drove her team to check back into hospital records for head circumferences of more than 1,600 babies born in the state in the last four years.

"We were very, very surprised," Mattos said. Babies with mild microcephaly were present in the population dating back to at least 2012.

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