'If we saw a spillover right now, we would be in free fall,' said an expert.
It may take more than a year for an infected animal to develop symptoms, which can include drastic weight loss, stumbling and listlessness.
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'If we saw a spillover right now, we would be in free fall,' said an expert.
It may take more than a year for an infected animal to develop symptoms, which can include drastic weight loss, stumbling and listlessness.