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Why does Ukraine have Europe's lowest vaccination rate?

12 October 2013 Last updated at 05:41 BST

Ukraine has the lowest vaccination rates of any European country, and health experts are alarmed.

They are warning that the situation has made the country vulnerable to a number of serious diseases, including polio and measles.

So why are many parents leaving their children unprotected?

David Stern reports from the Ukrainian capital Kiev.

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