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The A(H5N1) Conundrum

Are there some experiments that should never be carried out? Is there some knowledge that is too dangerous for humans to possess? Can the dissemination of knowledge, once it has been discovered, be limited to only a few people? These are some of the questions being raised by two papers from two virology groups [one of them UW?MAdison’s Yoshihiro Kawaoka] that created an avian H5N1 influenza virus that is easily transmissible from mammal to mammal through the air.