What comes after phase six?
Swine flu declared pandemic, can be even deadlier
three months after it struck, who declared swine flu a global pandemic of the highest level: phase six. Known as the 2009 A (H1N1) virus, it took down 89,921 people across 85 countries in six continents. The death count was 382. Yet it could not match the lethality of the Spanish flu virus that affected one-third of the world