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The dates and numbers of confirmed Zika cases within the set of total cases of microcephaly in Brazil.80,81,98,99,100
| Date | Confirmed Zika and microcephaly | Total microcephaly | Ratio |
|---|---|---|---|
| February 12, 2016 | 41 | 462 | 8.9% |
| March 1, 2016 | 82 | 641 | 12.8% |
| March 29, 2016 | 130 | 944 | 13.8% |
| July 20, 2016 | 267 | 1709 | 15.6% |
| July 27, 2016 | 272 | 1749 | 15.6% |
