H1N1 swine flu: Vaccine faces setbacks

The development of enough safe and effective vaccine is key to preparations for combating the expected proliferation of the H1N1 virus. Around the world, the health industry is busy producing and testing it while officials try to prepare the nation's hospitals, clinics, and public health agencies. But it is unknown how quickly sufficient vaccine can be produced and whether millions of people may be delayed in getting it because of nagging production complications.