The plague isn't the only resurgent disease humans once thought they had beat.
via Discovery News http://news.discovery.com/human/health/diseases-that-just-wont-quit-131010.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/human/health/diseases-that-just-wont-quit-131010.htm#mkcpgn=rssnws1
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