SINGAPORE has reported its first patient infected with the new a (H1N1) flu strain.

新加坡发现了第一例感染了H1N 1流感的患者。

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The 1976 swine flu strain and early human H1N1 strains are therefore very close siblings.

因此，1976年的猪流感病毒和早期的人类H1N1病毒是近亲。

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It is also why every few decades a flu strain appears with the genetic novelty to evade our herd immunity and wreak global havoc.

这也是为什么每过几十年就会出现一个流感株，它有着足够的基因改变来攻克人群的免疫，掀起全球范围的混乱。

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This is welcome news for U.S.health officials, who initially had to consider the possibility that the new flu strain's impact could mirror the devastation of the 1918 influenza pandemic that led to tens of millions of deaths worldwide.

VOA: standard.2009.05.03

World Health Organization officials say it could be months before a vaccine is available to treat this latest strain of flu.

VOA: standard.2009.04.28

"We had a new strain of flu. We did not really know that its lethality was going to be.

VOA: standard.2009.05.03

Health authorities have pointed out that this swine flu strain has never been seen.

CNN: Among the swine flu mysteries: Why only deaths in Mexico?

An H3N2 flu strain has been the most dominant and has been especially hard on the elderly.

CNN: Flu vaccine less effective, especially among elderly

Already, there are diagnostic tests for the flu strain and effective (though costly) antiviral drugs to treat it.

ECONOMIST: Averting a global plague | The