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

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