GENEVA, Feb. 2 (Xinhua) -- The recent cluster of microcephaly cases and other neurologic disorders reported in Brazil constituted a Public Health Emergency of International Concern, the World Health Organization (WHO) said Monday night.

The announcement came after WHO convened its first Emergency Committee meeting on Zika virus.

Zika virus outbreak in some countries of the Americas, notably Brazil, has been associated with a steep increase in the birth of babies with abnormally small heads and in cases of Guillain-Barre syndrome.