The medical mystery began 16months ago after the death of the Atlantic blacktip shark.

这个医学之迷起于十六个月之前，大西洋黑鳍鲨死了。

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Mary Snow explains what is known about what's becoming a medical mystery.

我们的记者玛丽·斯诺将会解释什么是已知及什么将成为医学之谜。

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The medical mystery began 16months ago after the death of the Atlantic blacktip shark named Tidbit at the Virginia Beach aquarium.

这个医学之迷起头于十六个月之前，在维吉尼亚海滨水族馆名为珍闻的黑鳍鲨死了。

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Government officials have released dozens of updates on his health during his time abroad that have been at turns encouraging and at times somber, leading critics to complain that his medical outlook remains a mystery.

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The cost of a medical procedure is usually a mystery until the bill comes.

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As they work to unravel the mystery, police, prosecutors and the medical examiner have revealed little, naming no suspects and declining to say if the lottery win might have presented a motive.

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