<prompt> True statement about influenza A is -It has a double stranded segmented RNAPandemic are caused by antigenic driftNucelocapsid antibody is not specificHemagglutinin and Neuraminidase is strain specific  <response>: The viral or antigen is composed of at least two coded proteins hemagglutinins and neuraminidase. Both are strain-specific and is capable of great variation. REF:ANANTHANARAYAN AND PANIKERS TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO-498 