bacteria and virus icons. disease-causing bacterias, viruses and microbes. color germs, bacterium types

bacillus background bacteria bacterium biology cartoon cell collection color colorful corona coronavirus creature design different disease diseasecausing flu fun germ graphic group helicobacter hepatovirus human icon illness illustration immunity immunodeficiency infection influenzavirus isolated measles medical micro microbe microbiology microorganism microscopic organism pathogen salmonella set streptococcus type ugly vector virus zika