swine influenza a virus subtype h1n1 molecule icon

swine influenza virus h1n1 molecular flu vector icon flat symbol vaccination isolated disease dangerous hazard infection pictogram emblem label sticker diagram microbiology science health microbe illness particle graphic respiratory pig epidemic lethal pandemic pictograph viral concepts hygiene medicine pollution bacterium parasitic biological disaster risk unwell warning attention dying crisis subtype molecule showing surface glycoprotein spikes white background concept font brand text line cartoon advertising logo poster circle presentation banner number signage organ drawing