South Korea confirms first case of Zika virus in the country

The World Health Organization (WHO) on Febuary 1 declared the Zika virus outbreak as a global public health emergency. The WHO also suspects a relationship between Zika infection in pregnancy and microcephaly.

Zika has not been proven to cause microcephaly in babies, but there is growing evidence that suggests a link. The condition is defined by unusually small heads that can result in developmental problems.

Brazil said it has confirmed more than 860 cases of microcephaly, and considers most of them to be related to Zika infections in the mothers. Brazil is investigating more than 4,200 additional suspected cases of microcephaly.