all the symptoms that occur during retroviral diseases. not always cute but funny .

abstract all allergen always animal art baby bacillus background bacteria bacterium biological biology cartoon cell collection color colorful creature cute danger disease diseasecausing diseases epidemic eye face flu fungi funny germ germs grunge health human icon icons illness illustration infection isolated medical medicine micro microbe microbes microbiology microorganism microorganisms microscopic monster nature not objects occur organism pandemic party pathogen retroviral science set sick sign symbol symptoms texture that vector virus viruses virusesbacteria