PT - JOURNAL ARTICLE AU - Michael A Johansson AU - Luis Mier-y-Teran-Romero AU - Jennita Reefhuis AU - Suzanne M Gilboa AU - Susan L Hills TI - Risk estimates for microcephaly related to Zika virus infection - from French Polynesia to Bahia, Brazil AID - 10.1101/051060 DP - 2016 Jan 01 TA - bioRxiv PG - 051060 4099 - http://biorxiv.org/content/early/2016/05/02/051060.short 4100 - http://biorxiv.org/content/early/2016/05/02/051060.full AB - Zika virus (ZIKV) infection during pregnancy has been linked to birth defects,1 yet the magnitude of risk remains uncertain. A study of the Zika outbreak in French Polynesia estimated that the risk of microcephaly due to ZIKV infection in the first trimester of pregnancy was 0.95% (95% confidence interval: 0.34-1.91%), based on eight microcephaly cases identified retrospectively in a population of approximately 270,000 people with an estimated 66% ZIKV infection rate.2