pathogens. types of infectious agents

acellular anthrax bacillus bacteria bacterial bacterium biology bug candida cell cellular collection corona covid danger dangerous dermatophytes design disease epidemic epidemiology flu fungi germ health icon illness illustration infection infections infectious influenza isolated living medical medicine micro microbe microbiology microorganism microscopic nonliving organism pandemic pathogen pneumonia prion protein protozoa replication rotavirus science set singlecelled symbol toxoplasma type types ulcer unicellular vector viral virus viruses yeast