The World Health Organization (WHO) expects the Zika virus, which is spreading through the Americas, to affect between three million and four million people, a disease expert said on Thursday. WHO's director-general said the spread of the mosquito-borne disease had gone from a mild threat to one of alarming proportions.
The mosquito-borne Zika virus has already infected more than 13,500 people in Colombia and could hit as many as 700,000, the health minister said on Wednesday. According to Pan-American Health Organization figures, the country is second only to Brazil in infection rates, health minister Alejandro Gaviria told journalists.