Here’s What Scientists Know About Ebola in Sierra Leone

TIME

Everything we know about Ebola since the disease’s two dozen or so outbreaks since 1976 comes not from a rich, deep database of scientific evidence that’s been carefully collected and recorded. With few formal health care systems in the areas hardest hit by the disease, there were no medical records, no charts and no standardized ways to document patients’ symptoms, vital signs, treatment regimens and whether or not they survived. Instead, much of our knowledge comes from the haphazard scrawl of doctors’ notes and their recollections about treatment and survival rates.

But for the past 10 years at Kenema Government Hospital in Sierra Leone, the country’s Ministry of Health has been working with a group of international researchers to establish a meticulous medical records system—originally for patients with Lassa fever, another common infection in the region. So when the first Ebola patient walked through the door on May 25, the…

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