WHO- influenza pandemic alert raised from phase 4 to 5

who.int — Dr Margaret Chan, WHO's Director-General raised the current level of influenza pandemic alert from phase 4 to 5. She stated that all countries should immediately activate their pandemic preparedness plans. At this stage, effective and essential measures include heightened surveillance, early detection and treatment of cases, and infection control Apr 30, 2009 View in Crawl 4