Vaccines deployed as Ebola strikes the Congo
Can we end the scourge of global pandemics? Dozens have died as a fresh Ebola outbreak hits central Africa. The lives of potentially thousands more depend on a new experimental vaccine.
At least 26 people have died as a fresh outbreak of Ebola grips the Democratic Republic of Congo. What began as a handful of cases in rural areas has now reached the city of Mbandaka — where it could spread even faster. Nine countries on Congo’s border are on high alert.
Ebola is incredibly deadly and contagious. Those infected suffer a high fever, vomiting, diarrhoea, and internal bleeding — around 50% of cases end in death.
Between 2013 and 2016, a vicious epidemic ravaged several West African countries, killing 11,310 people. Cases were even recorded in Britain and the US.
So far, this latest flare-up is yet to be classified as a global health emergency.
And this time doctors have a brand new weapon: an experimental vaccine. Not available during the 2013 outbreak, it has proven effective in recent trials. Dr Daniel Lucey thinks it may become a “game changer” in preventing Ebola epidemics full stop.
If this is the case, it would contribute to a global trend which sees doctors slowly winning the war against infectious diseases. Global deaths from tuberculosis have been slashed by 37% since 2000, and deaths from AIDs have almost halved since 2005.
And with modern drugs and sanitation it is surely impossible for the 21st century world to suffer pandemics on the scale of the Black Death or Spanish flu — both of which killed tens of millions.
Or so you might think. Medicine is improving, but grand changes in how we live may actually be increasing the risk of pandemic outbreaks.
For example, more people than ever now live in cities; the United Nations predicts that 66% of the world will live in urban areas by 2050. As more people are squeezed close together, disease has more chance to thrive.
Secondly, the increased risk of flooding that climate change brings may spread waterborne diseases like cholera more widely.
Then there is tourism. In 2017, there were 1.3 billion tourist arrivals across the world — every flight a potential vehicle for pathogens to spread across borders.
Can we stop pandemics for good?
On the mend
It is possible, some argue. And if this vaccine works, it will be the latest example of the power of modern medicine. It stretches beyond science too. Sanitation in developing nations has improved remarkably in recent decades, and access to health care has been boosted the world over. Progress will bring an end to pandemics.
But progress also brings greater dangers, others respond. For example, antibiotics have saved millions, but they also help drug-resistant superbugs to evolve. Air travel and modern megacities may connect more people, but they also provide the perfect place for diseases to thrive. Pandemics are our future, not the past.
- Are pandemics the biggest threat facing humanity?
- Is science stronger than nature?
- Using facts and figures from this article, write a quiz consisting of five questions concerning the recent Ebola outbreak. Test your classmates’ knowledge. Did they get all the answers right?
- Do some research into either the Spanish flu or the Black Death. How did the pandemic begin and what were the main ways that it spread? What were its symptoms? Is it possible that a similar thing could happen in the modern world? Why/why not?
Some People Say...
“The ideal of medicine is to eliminate the need of a physician.”William James Mayo
What do you think?
Q & A
- What do we know?
- Authorities have identified 46 possible cases of Ebola, of which 21 have been confirmed, 21 are probable and four suspected. This is the ninth recorded outbreak of Ebola in the Democratic Republic of Congo since the disease was identified in 1976. The previous outbreak occurred last year and killed four people.
- What do we not know?
- How far it is likely to spread. Mbandaka is a major transport hub on the Congo River and there are fears it could reach the capital, Kinshasa. We also do not know how effective the vaccine will be. It is currently unlicensed and has never been used to control an outbreak of this scale. However, in a 2016 trial it was administered to 6,000 people in Guinea — none of whom subsequently contracted the disease.
- Ebola is spread through contact with the blood, body fluids, secretions or organs of somebody who is infected.
- According to the World Health Organisation (WHO), 16 million people died from infections in 1990. This fell to 15 million by 2010, and is projected to fall to 13 million by 2050 — in spite of increases in the global population.
- According to the WHO.
- When a disease spreads across an extremely large area, or the entire world. A pandemic is more severe than an epidemic.
- Black Death or Spanish flu
- The Black Death was a plague pandemic which killed between 75 and 200 million people during the 14th century. Spanish flu killed around 50 million people between 1918 and 1920.
- According to the World Tourism Organisation.
- According to a 2015 WHO report, 91% of the global population uses an improved drinking water source, up from 76% in 1990.
- According to a 2017 report published in The Lancet, access and quality to health care improved in almost every country in the world between 1990 and 2015.