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www.fdanews.com/articles/126651-who-asks-shantha-biotechnics-to-recall-shan5-vaccine

WHO Asks Shantha Biotechnics to Recall Shan5 Vaccine

April 30, 2010
The World Health Organisation (WHO) has recommended recall and destruction of all lots of the Shantha Biotechnics-produced five-in-one, or pentavalent, Shan5 vaccines as a precautionary measure, after the discovery of undissolved white sediments in the vaccine.
Business Standard