Mali scrambled Wednesday to prevent a major Ebola epidemic after the deaths of an Islamic cleric and a nurse, as the official death toll in the worst epidemic in history passed 5,000.

Mali scrambled Wednesday to contain an outbreak of Ebola as it confirmed the death of a nurse, its second fatal case but the first of the virus spreading within the country’s borders.

The Ebola epidemic has led to a boom in downloads for the online game “Plague Inc”, prompting its British developer to launch a charity initiative and offer it as a teaching tool.

Canada on Monday ramped up travel restrictions for people returning from Ebola-stricken countries, officials said, and said “high risk” travelers should be closely monitored for symptoms or admitted to a special facility.

Bob Geldof on Monday announced a 30th anniversary version of the Band Aid charity single “Do They Know It’s Christmas?” with U2 frontman Bono, Coldplay’s Christ Martin and One Direction joining to raise money to fight Ebola.

Google launched a campaign Monday to raise money to fight Ebola, tossing $10 million into the pot and saying it will match donations to the fund two to one.

The African Union, African Development Bank and regional business leaders have set up a crisis fund to help areas hit by the Ebola outbreak, the AU said in a statement.

– The button, which will appear at the top of user news feeds, will enable an easy donation to groups such as International Medical Corps, the International Federation of Red Cross and Red Crescent Societies and Save the Children.

West African tourist chiefs urged travellers on Wednesday not to boycott their region because of the Ebola crisis, insisting that the epidemic was only affecting three countries in a vast continent.

US philanthropist Bill Gates on Sunday announced he will donate over $500 million to fight malaria and other infectious diseases in the developing world, saying the Ebola outbreak is a call to action.