China closes in on vaccine for deadly pig virus

* NEWS * 13 March 2020 African swine fever has wiped out 40% of the country’s 440 million pigs. By * Smriti Mallapaty * Smriti Mallapaty Researchers in China have developed an experimental

vaccine that can protect pigs for life from a lethal virus that has decimated its pig population — the world’s largest — over the past 18 months. But virologists say the team still need to

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