Hong Kong culls bird flu chickensTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoPaul-692601/28/2014January 28, 2014Hong Kong authorities cull 20 thousand chickens. This after a positive test for the H7N9 influenza virus which has killed 20 people.https://p.dw.com/p/1AyXoAdvertisement