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Flow diagram of subject recruitment for the research study. a Confirmed cases of microcephaly and/or other malformations related to congenital infections during April 2017 in State of Rio Grande do Norte of Brazil (RN). b Cases of microcephaly related to Zika virus (ZIKV). c STORCH: Syphilis, Toxoplasmosis, Rubella, Cytomegalovirus, Herpes.
