A jump in the number of people in China infected with bird flu this year is raising concern among experts, who say a previously circulating strain appears to have changed and may be more infectious to people.
Sub-Regional Laboratory Coordinator for East and Horn of Africa reliefweb.int - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from reliefweb.int Daily Mail and Mail on Sunday newspapers.