Zika virus has been known for quite some time, but it gained notoriety recently due to its possible linkage to birth defect.
Science News has a summary report on Zika virus:
https://www.sciencenews.org/article/special-report-heres-what-we-know-about-zika [sciencenews.org]
A report on the studies of its possible linkage to microcephaly, a birth defect of babies with undersized and underdeveloped brains:
https://www.sciencenews.org/article/how-zika-became-prime-suspect-microcephaly-mystery [sciencenews.org]
In short, evidences are mounting, but still not quite a confirmation. The studies are continuing.