Outlining a global plan to fight the viral disease and get ahead of a potential global outbreak, the WHO said the next influenza pandemic "is a matter of when not if."
"The threat of pandemic influenza is ever-present," Tedros Adhanom Ghebreyesus, the WHO's director-general, said in a statement. "We must be vigilant and prepared – the cost of a major influenza outbreak will far outweigh the price of prevention."