PressRadar.com - News Search Engine: Scientists struggle to understand swine flu virus 
    (AP)

Scientists struggle to understand swine flu virus      (AP)
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Yahoo on 30/04/2009 00:30:30
 
AP - Mexico's health secretary may have thought he was allaying fears about
swine flu when he suggested that the nation's swine flu death rate was 6 or 7
percent. In reality, that would mean a monstrous killer virus — and no experts
are close to saying that. The secretary's comment reflects how much remains
unknown about the new flu virus — most notably how lethal it is and why it
seems so much deadlier in Mexico than anywhere else.