Member states of the World Health Organization have agreed a long-awaited reform of the agency so that it responds more effectively to emergency situations.

The World Health Organization will hold an emergency meeting on the yellow fever outbreak that has hit hardest in Angola but risks spreading further if vaccinations are not ramped up. Such meetings from the UN agency are often held before the declaration of an international health emergency, as happened amid the Ebola outbreak in West Africa, and the current surge in neurological disorders linked to the spread of Zika virus in the Americas. Eleven people have tested positive for yellow fever in China after returning from Angola. WHO has sent 11.7 million doses to Angola and there are plans to vaccinate 2.2 million people in DR Congo.