div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Figure 1 Antigenic drift Image source: NIAID · The that a flu jump from one animal species to another including humans is called ANTIGENIC SHIFT Antigenic shift can happen src=https:reader033fdocumentsnetreader033viewer20220513215ba01bd309d3f259468c2d4fhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpFigure 1 Antigenic drift Image source: NIAIDpdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Figure 1 Antigenic drift Image source: NIAID · The that a flu jump from one animal species to another including humans is called ANTIGENIC SHIFT Antigenic shift can happen src=https:reader033fdocumentsnetreader033viewer20220513215ba01bd309d3f259468c2d4fhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divpFigure 2 Antigenic shift Image source: NIAIDpdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: Figure 1 Antigenic drift Image source: NIAID · The that a flu jump from one animal species to another including humans is called ANTIGENIC SHIFT Antigenic shift can happen src=https:reader033fdocumentsnetreader033viewer20220513215ba01bd309d3f259468c2d4fhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divpFigure 3 The HIV Life Cycle Image source: NIHpdiv