WHO public health emergency: What to know
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What are the precedents?
It is the sixth time that WHO has declared a PHEIC since the designation was adopted in 2005. Declarations were announced previously for the H1N1 flu pandemic in 2009, outbreaks of polio and Ebola in 2014, the Zika virus epidemic in 2016, and an ongoing Ebola epidemic in the Democratic Republic of Congo.