set of letters made of virus on gray background. capital letter e, f, g, h. 3d rendering. covid font

alphabet attention awareness background bacteria bacterium banner biological biology capital cell china chinese concept corona coronavirus covid covid19 danger dangerous disease epidemic fever flu font graphic gray health human icon illness illustration infection influenza isolated letter lettering letters medical medicine microbe microbiology numbers pandemic pathogenic poster protection respiratory sars science set sickness sign signage symbol text viral virus virusfont web world