Symbolic imageWHO probes Russian lab worker's death as China and Hong Kong tighten plague checks
A laboratory worker at an anti-plague research institute in Russia died from pneumonia, and Chinese authorities in Hulunbuir cite a suspected pneumonic plague death; The Telegraph reports that the WHO is probing 'unanswered questions'. Hulunbuir and Hong Kong have stepped up precautions, and health experts say the scant information from Russia means a lab accident cannot be ruled out.
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