WARSAW, Dec 1 (Reuters) - A deadly H5N1 strain of bird flu has been found at a turkey farm in Poland, near the city of Plock, northwest of Warsaw, a district crisis management official said on Polish television on Saturday. Hilary Januszczyk, a Plock crisis management official, said the cases were found at a farm in the village of Brudzen near Plock. He said it was the most dangerous strain of the virus -- H5N1. (Reporting by Marynia Kruk)
