AUTHOR=Puro Kekunguu , Sen Arnab TITLE=Newcastle Disease in Backyard Poultry Rearing in the Northeastern States of India: Challenges and Control Strategies JOURNAL=Frontiers in Veterinary Science VOLUME=9 YEAR=2022 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2022.799813 DOI=10.3389/fvets.2022.799813 ISSN=2297-1769