Avian virus variants farms turn a new vaccine
in recent years, the avian influenza virus is constantly mutating strains, Agriculture, Fisheries and Conservation Department (AFCD) Senior Veterinary Officer Shirley CHUK Harbin Re-6 production of a new vaccine against the H5N1 virus, the most popular in recent years 2.3.2.1 lineage. Department in two farms test to help 30,006 thousand chickens dozen new vaccines that are effective temporarily. At present, 85% of local chicken farms have switched to Re-6 vaccine, expected in April all switch, but the virus to continue to monitor the trend. Department of Microbiology, University of Hong Kong Chair Professor Yuen Kwok-yung said the the chickens inoculated Old vaccine antibodies and in less than a new virus, no reason to continue to use. Do not switch to the new vaccine risk farms would burst.
http://www.epochtimes.com/gb/13/2/18/n3803204.htm
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