STUDY ON THE PREVALENCE OF AVIAN INFLUENZA INFECTION OF DIFFESRENT UPAZILLA IN CHITTAGONG DISTRICT

Abstract

The purpose of this study is to determine the prevalence of avian influenza infection (bird flu) in Chittaging area and also in Bangladesh throughout the year. The data on the outbreak of Avian influenza was collected from the Department of Livestock Services (DLS). The highest mortality rate was found in Potia (23.7%) and lowest in Hathazari (2%). The mortality of layer bird was highest (13.4%) than broiler (1.3). There was also seasonal variance. Highly pathogenic (H5N1¬) avian influenza viruses have swept through poultry populations across Bangladesh, and the parts of Chittagong. Their outbreaks are historically unprecedented in scale and geographical spread. Their economic impact on the agricultural sector of the affected region has been large. Influenza viruses are genetically unstable and their behaviors cannot be predicted, so the risk of further human cases persists. The human health implications have now gained importance, both for illness and fatalities that have occurred following natural infection with avian viruses, and for the potential of generating a re-assortment virus that could give rise to the next human influenza pandemic.