During a health crisis it is essential to know the nature of the threat, how it is spreading, how fast and widely, to be able to limit the spread and health effects, and to provide up-to-date information and advice to citizens.
Selleks, et piirata terviseohu levikut ja mõju tervisele ning anda kodanikele ajakohast teavet ja nõuandeid, on tervishoiukriisi vältel oluline teada, mis laadi terviseohuga on tegemist, kuidas see levib, kui kiiresti ja kui laialdaselt.