Fox Health: Increasing H7N9 bird flu toll demands constant vigilance

[riky]

Increasing H7N9 bird flu toll demands constant vigilance

<p>A wave of H7N9 bird flu cases and deaths in China since the start of 2014 shows emerging flu strains need constant surveillance if the world is not to be caught off guard by a deadly pandemic.</p><img src="http://feeds.feedburner.com/~r/foxnews/health/~4/eD6oA9slOc4" height="1" width="1"/>

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