Crossover: Two of three patients had contact with birds

China is facing a new strain of the bird flu virus after it was discovered last week. So far the new strain has claimed the lives of two people. The virus is long known to have existed amongst poultry, but this is the first time that it has been found in humans. Disease control scientists are busy trying to understand how it spread and what must be done to prevent it from spreading further. For the latest, we’re joined live by ICS reporter Zhang Ningben in Shanghai.
Q1: Ningben, we understand that this is the first time this particular strain of the bird flu virus has been detected in humans. Any update on how the patients got infected in the first place?