WHO working on a severity scale to accompany pandemic alert phases.
Branswell
Helen
H
D004196:Disease Outbreaks / Q000145:classification* / Q000517:prevention & control / Q000706:statistics & numerical data; D004631:Emergency Medical Service Communication Systems; D014943:Global Health; D017408:Guidelines as Topic; D006801:Humans; D033181:Information Dissemination / Q000379:methods*; D008402:Mass Media; D014944:World Health Organization / Q000458:organization & administration*