Foot-and-mouth Disease—a World Problem
暂无分享,去创建一个
In the past few days there has been some evidence of infection by foot-and-mouth disease among animals in the south of England. In Britain the disease is controlled by slaughtering infected animals. The difficulties of control by vaccines were described by Dr. Brooksby in a lecture to the Royal Veterinary College, London, on November 30, 1966, and the following article is an extract of his lecture