bacteriophage virus

bacteriophage bacteriophages bacterium biosphere boogers cell chest cold coughing death diarrhea different doctor electron fever flu food genomes germs health healthcare human ill illness illustration image infection infects influenza lifestyles magnification magnified medical medicine micro microscope mucus norovirus organism phlegm public replicates rna scientific season sinus sneezing spread stomach stomachache surface surfaces unhygienic vaccine viral virions virus vomit white