The most economical and most effective way to control plant virus diseases is to breed genetically engineered anti-virus varieties.

通过植物抗病毒基因工程进行作物育种是防治病毒病害最经济有效的方法。

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And a debate is raging as to whether or not to inoculate the public against smallpox or whether the vaccine would prove effective against genetically engineered strains of the virus.

BBC: Anthrax investigation stalled

Novavax's vaccines utilize what are called virus-like particles--genetically engineered molecules designed to train the immune system to recognize a particular virus.

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