The recent Zika outbreak originated in Brazil and spread across Latin America. The virus transmitted by daytime-active mosquitos affects primarily monkeys and humans, without causing serious complications in adults, however, it can lead to babies being born with microcephaly, a type of skull and brain defect.
Currently, the Zika cases are registered in 27 states across the globe, including both Americas, the South Pacific and some European countries, including Sweden and Denmark.
Earlier this week, both the World Health Organization (WHO) and the German Robert Koch Institute confirmed that two cases of the Zika virus were identified in Germany in December.
The WHO expects that the Zika virus could infect up to four million people, a senior WHO official said on Thursday. The organization's emergency meeting on the issue is scheduled for Monday to decide whether a global health emergency should be announced.