set of viruses, bacteria and other microorganisms. scientific in sketch style

virus bacteria microorganism covid coronavirus hepatitis influenza corona rotavirus hiv adenovirus plague rabies sketch hand drawn drawing doodle set type germ bacterium cholera epidemic unicellular cell molecule biology microbiology gut microbe flu micro organism disease vector microbiota lactobacillus bifidobacterium probiotic protozoa ameba plankton science microscopic bacillus pathogen streptococcus zika measles amoeba web viruses microorganisms scientific style microorganisms