BRASILIA –  The suspected and confirmed cases of newborn with abnormally small heads linked to the Zika virus in Brazil had increased to 4,074 as of Jan. 30 from 3,718 a week earlier, the Brazilian Health Ministry said on Tuesday.
Of a total of 4,783 notified cases of the neurological condition called microcephaly reported since October, 709 were found to be negative, the ministry said in its weekly tally.
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On Monday, the World Health Organization declared a global emergency over the rapid spread of the mosquito-borne Zika virus that Brazilian authorities say is causing the brain defects in babies.