One influenza virus is causing great concern right now and is teetering on the edge of being a serious problem in 2025: influenza A subtype H5N1, sometimes referred to as “bird flu” One influenza virus is causing great concern right now and is teetering on the edge of being a serious problem in 2025: influenza A subtype H5N1, sometimes referred to as “bird flu” Health Health News, Wellbeing Tips, Diseases, Treatment and Nutrition | The Hindu