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مشاهدة النسخة كاملة : Man sheds polio for 30 years after jab



BECKHAM
28-08-2015, 11:20 AM
A man with an immune system disorder has spread polio for nearly 30 years, despite having been vaccinated, British scientists have found.

for more .... (http://www.bbc.co.uk/news/health-34082627#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa)