Ebola

The Ebola epidemic in West Africa is officially over, but thousands of survivors are still experiencing health problems, including blindness, musculoskeletal pain and, in some cases, have remnants of the Ebola virus in bodily fluids.

Liberia is Ebola-free, says the World Health Organization. But experts say that the problem of Ebola is far from over.

After two years of grappling with a deadly disease, Guineans are celebrating. The World Health Organization has announced that the country is free of Ebola virus transmission.

Sierra Leone is counting down to an Ebola-free future: November 7 marks the day the country will celebrate being officially declared free of the disease.

Kerry helps run a program that is trying to address the lack of skilled doctors and nurses in several African countries.

Umaru Fofana is one of Africa's most respected journalists. But when he covered the Ebola epidemic in his own country of Sierra Leone, he knew there was no prospect of an evacuation or special medical treatment if he became infected.

The number of infected in Sierra Leone, Liberia and Guinea is less than seven times what it was in February. As a result, people are feeling freer to leave their homes and go back to normal life. But some experts worry that with comfort comes complacency.

Researchers working in Guinea have developed an experimental Ebola vaccine that they say is highly effective. But it has been a long time coming, and groups like the World Health Organization have admitted the need for emergency response reform before another crisis strikes.

Kai Brothers has kept HIV at bay for 30 years. And he's been donating blood for every month to help doctors figure out why.

Scientists are still trying to determine how often and how long the Ebola virus stays active in semen.