[Blood of Tyrants]

Why has the numbers of microcephaly suddenly spiked? Zika has been known for 70 years and until recently it caused nothing more than a mild illness.

[sagar]

“Why has the numbers of microcephaly suddenly spiked? Zika has been known for 70 years and until recently it caused nothing more than a mild illness.”

Perhaps the “spike” you speak of is simply due to an observer bias.