American foulbrood is a contagious disease and reports on the cases are obligatory according to the Directive on Animal Health Protective Measures for 2009. On the area of Southern Bačka and Srem district in the period between 2002 and 2007 this diseases was detected in 50 bee colonies in 5 municipalities. The prevalence of American foulbrood in contaminated area was monitored with the intention to detect its spreading. There were 613 colonies clinically examined. In 82 colonies the samples of honey were analyzed on Paenibacillusa larvae spora. The examined colonies were without clinical signs, but in 28 colonies (34.5%) the spores were detected. In the same samples an examination on residua presence was carried out and it was present in 26 samples (31.70%).
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