In Brazil, where the link between the Zika virus and babies born with microcephaly to women who had been infected during pregnancy was first noted two years ago, 2,100 cases of infants born with brain damage caused by the virus have been confirmed. With 3,000 more suspected cases of Zika-caused brain damage among newborns being investigated in that country, and about a third of all such investigated cases leading to confirmation, health officials expect another thousand cases to be recorded soon. And while reported Zika infections have ebbed slightly with the passing of mosquito seasons in Brazil, the problem is far from over with from 150 to 200 cases of microcephaly identified each week.