It was a December day like any other in the village of Meliandou: a remote outcrop in the densely forested region of southern Guinea. And a young boy named Emile Ouamouno was playing by a tree filled with fruit bats.
Within weeks, the 18-month-old would be dead, along with his mother, sister and grandmother. Now identified as patient zero, Emile likely came into contact with infected fruit bats, becoming the first victim of the most deadly Ebola epidemic in history.
From Meliandou, the virus spread to the surrounding towns and cities, sweeping through friends, families and healthcare workers. By the time it was recognised as Ebola by the World Health Organisation, the virus had already spread through Guinea, and would soon cross the border into Liberia and Sierra-Leone.
From West Africa, Ebola travelled around the world – the UK, France, Spain and America were all affected by the deadly spread. And over the course of the next two years, more than 11,300 people would die as a result.
In early-2016, the WHO officially declared the Ebola emergency over. But there’s no question that Ebola and other pathogens like it will emerge again.
Building a frontline defence
In an increasingly connected world, the need to develop a frontline defence against viral epidemics is greater now than ever. And whilst there are many factors at play in successfully managing an outbreak, one of the greatest weapons we have is knowledge.
The way that viruses function is closely linked to their structure on the atomic level. Like most organisms, viruses contain complex molecular machinery that allows them to survive and thrive. By unpicking the atomic structure of viruses, we can identify vulnerabilities and create medicines that exploit these weaknesses to counteract infection.
Ebola has been around for a long time, but we’ve not yet developed either a working vaccine or a treatment to counteract the disease. This is partly because no outbreak has ever before been so widespread or so deadly. It’s also because Ebola’s intricate structure makes it a very tricky virus to treat.
Ebola is what’s known as an ‘enveloped’ virus, meaning that it is surrounded by a protective membrane which contains proteins that allow it to latch on to host cells. These ‘glycoproteins’ make Ebola strong, but they also make it vulnerable.