Latin America

How many cases of microcephaly in Brazil have actually been linked to the Zika virus? Of the nearly 4,200 cases reported, only six have been linked with certainty to the virus.

The International Olympic Committee is sending an advisory to participants on how to deal with the mosquito-borne virus. The games in Rio de Janeiro begin in 189 days.

Thousands of Central American migrants come to the U.S. illegally each year. They often hire a human smuggler to get them across the border. The story of one woman's journey shows how human smuggling is intertwined with human trafficking.

The World Health Organization says the spread of the Zika virus through the Americas is "alarming" and will meet on Monday to decide whether to declare the outbreak an international health emergency. The virus may be linked to cases of birth malformations in Brazil.

Mexican authorities said they put Ethan Couch on a plane in Mexico City. The 18-year-old, who was on probation for killing four people while driving drunk, had fled to Mexico with his mother.

Facing criticism that the World Health Organization has been slow to respond to Zika, Dr. Margaret Chan delivers her first major address on the outbreak.

A team of researchers working on a Zika vaccine has a massive study underway assessing pregnant women and newborns in the northeastern region of Bahia, Brazil. It is the largest study of its kind into a virus that is sweeping across Latin America and has been linked to microcephaly in infants.