alphabet made of virus on black background. right square bracket, left and right parentheses. 3d

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