英语听力精选进阶版 14498(在线收听) |
Deadly discovery in US labs The deadly microbes were stored in vials 8 September 2014 Six deadly substances, some over a century old, have been discovered in government laboratories in the United States. The deadly microbes were found in a hunt that started after the accidental discovery in July of bottles of smallpox at a research centre near Washington. Reporter: Joanna Jolly Report Workers searching the government premises found six different types of microbes classed as being so dangerous they're required to be stored at high-secure facilities. Instead, they were found in regular laboratories. They included bacteria that cause the plague and nerve toxins that cause botulism. A vial of the highly poisonous toxin ricin was also found, dating from nearly a century ago. Authorities said although the microbes had not been stored correctly, they had been properly sealed, so posed no danger to staff. They have all been destroyed. |
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