For decades, failures by the WHO to respond to global health crises have drawn criticism and calls for reform by policy experts, governments and independent financial donors from across the world that contribute three-quarters of its $4 billion annual budget.
Serious recent failures that have drawn fire include shortcomings in its response to the Ebola pandemic, health crises in Sri Lanka in 2009, Haiti in 2010, South Sudan in 2013 and its current response to drug-resistant Tuberculosis in Papua New Guinea.