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From the BBC Website:

The Zika virus is dominating the news this week. The latest data says it's been found in 21 countries so far. The symptoms are generally mild, but the possibility of a link to microcephaly has been raised in Brazil. Microcephaly is a serious condition where children are born with abnormally small heads and sometimes incomplete brain development. Trudie Lang, Professor of Global Health at Oxford University and Head of The Global Health Network, and virologist Professor Jonathan Ball from Nottingham University discuss what we know so far.

Listen to this radio broadcast, it is the first item after the introduction.