The causative organism of Avian influenza is a? by Sunday | Dec 20 | Agricultural Science WAEC | 0 comments A. bacterium B. virus C. fungus D. protozoan. Correct Answer: Option B – virus Users Also Read These:The causative agent of typhoid fever is?An association between living organisms in which one…The activity of an organism which affects the…The diagram above shows the dentition of an…The type of nutrition exhibited when organism lives…