Parowan Times | 1939-12-29 | Page 5 | Chicken Embryos Help Battle Dread Horse Disease

chicken embryos help battle dread horse disease qa T N 1 1 good news to the nations farmers came from the united states department of agriculture recently with the announcement that a cheap extremely effective vaccine against almost always fatal sleeping sickness in horses has been developed the vaccine has been produced by use of chicken embryos in their shells left the live 10 or 11 day old embryo of a chicken is inn with sleeping sickness virus center inset when the chicken is about to break out of the egg the embryo is removed right the vaccine made from the embryo is injected into the skin of the horses neck making him immune the virus filled embryo is extremely dangerous to handle and workers are arc equipped with rubber gloves