Health

Health

We still don't know for sure how Ebola reached humans

Scientists are still trying to figure out when and how the Ebola virus first emerged in humans. Many believe that fruit bats are the so-called “reservoir hosts,” but that remains to be definitively proven. Science writer David Quammen ventured deep into the forest of central Africa to try to find out for his latest book “Ebola: The Natural and Human History of a Deadly Virus.”

Health

How 'big data' could help stop the spread of Ebola

When it comes to containing an outbreak like Ebola, anticipating where it might spread next is crucial. Until somewhat recently, however, the only way to do that was through untimely census records. But with the proliferation of so-called "big data," epidemiologists can track in real time where West Africans are headed — and where they might be spreading the disease.

Health

Zambia: Rationing health by queue

The rationing of health care is not always obvious or explicit. Implicit factors may determine who receives care and who does not.One factor may have imposed a form of unintentional rationing on AIDS care in Zambia, as David Baron reports.