#Zika just keeps on giving... 
"Below-average neurodevelopment and/or abnormal eye or hearing assessments were noted in 31.5% of children between 7 and 32 months of age."https://www.nature.com/articles/s41591-019-0496-1 …
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Hmmm, I don't know - I'm a little skeptical. Haven't had time to read in detail and I'm not familiar with most of the tests, however: 1. No control group (not acceptable IMO) 2. They talk about below average (as opposed to normal) all the time. We'd assume ~50% would be < avg!
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I agree with you regarding the lack of control group - I found it hard to know what should be considered normal (average...). Still, 31% is alarmingly high.
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Agree that control groups are always good - but Bayley scales are regarded as the "gold standard" for neurodevelopment and, as far as I understand, ranges of "normality" have been established in large population-based studies, and validated across settings (including Brazil).
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