The number of people killed by the Ebola outbreak in West Africa is now more than 3,000. The World Health Organisation says the majority of the deaths happened in Liberia.<br /><br />Against this backdrop, US President Barack Obama, speaking at a global health security summit in Washington, said no country could meet the challenge of Ebola on its own.<br /><br />Al Jazeera's Dominic Kane explains.<br /><br />Subscribe to our channel http://bit.ly/AJSubscribe<br />Follow us on Twitter https://twitter.com/AJEnglish<br />Find us on Facebook https://www.facebook.com/aljazeera<br />Check our website: http://www.aljazeera.com/
