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WHO: Swine flu survivors will gain 'some' immunity

A senior world health official says patients who recover from swine flu would be more protected from a similar virus in future than uninfected people.
WHO's flu chief Keiji Fukuda says influenza infections generally confer some level of immunity "for a couple of years."
Fukuda told reporters in Geneva that after a few years "the viruses themselves change enough so that it's kind of a new virus for your body" and people become susceptible again.

Updated : 2022-01-23 08:00 GMT+08:00