pathogens s. bacteria, germ, virus set

adenovirus adenoviruses bacilli bacteria bacterial barr biology cell circle coli cytomegalovirus diagram disease ebolavirus epidemic epstein flu health hepatitis herpes hygiene icon ill illness immune immunity infect infection influenza latent macro medical medicine micro microbe microbiology microorganism papillomavirus pathogen research rotavirus salmonella set staphylococci streptococci streptococcus toxoplasma unhygienic vaccine viral virus