ScienceBird flu tests risky but vitalTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceAbbany, Zulfikar01/28/2013January 28, 2013Scientists from around the world have said they will lift a moratorium on sensitive H5N1 research, which was stopped over terrorism fears. The WHO's Gregory Härtl tells us why the moratorium was important and why the studies must now go on.https://p.dw.com/p/17TElAdvertisement Interview: Zulfikar Abbany