Zika virus continues to spread

The Centers for Disease Control and Prevention, which reported this week that a dozen cases of Zika virus have been confirmed in the United States, is expanding its advisory that pregnant women should avoid travel to countries currently seeing high rates of infection.

The agency’s initial list contained 14 countries, but the CDC on Friday added eight more — in South America, the Caribbean and Polynesia — as places where the reach of the virus is growing.

The CDC now is working with authorities in Brazil to study a potential link between the mosquito-borne virus and a rare syndrome known as Guillain-Barré that can lead to paralysis. In Brazil, which is currently the epicenter of Zika, public health officials were already investigating a link between the virus and a rare birth condition called microcephaly. That country has seen nearly 3,900 suspected cases since October, with the babies involved suffering serious brain damage.

Read the full article on the history and current status of the global spread of Zika virus, in The Washington Post.