Microcephaly Linked to Zika Virus Is a 'Public Health Emergency,' Officials Say

The recent, dramatic increase in babies in Brazil born with microcephaly — underdeveloped skulls and brains — that has been linked with the Zika virus constitutes "a public health emergency of international concern," Dr. Margaret Chan, director-general of the World Health Organization, said today. Clusters of microcephaly and other neurological complications that are possibly linked to the virus make up "an extraordinary event and a public health threat to other parts of the world,"