Vaccines for three deadly viruses fast-tracked
Scientists have named three relatively little-known diseases they think could cause the next global health emergency.
A coalition of governments and charities has committed $460m to speed up vaccine development for Mers, Lassa fever and Nipah virus.
They are asking funders at the World Economic Forum Davos for another $500m.
The Coalition for Epidemic Preparedness Innovations (Cepi) aims to have two new experimental vaccines ready for each disease within five years.