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Infectious laryngotracheitis (ILT) is a disease that causes high death losses in susceptible poultry. In autumn 2007, a number of live and dead chickens from a Crested Polish breeding of 150 birds were submitted to the Institute of Poultry Diseases. Clinically, the affected birds showed severe symptoms of respiratory system irritation (gasping, difficulties in breathing, wheezing), whereas at necropsy,...
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