pathogen round colorful concept line

allergen bacteria bacterial bacteriology bad biological blue cell cholera circle circular color colored colorful concept contaminant contaminants dangerous dark design disease diseased dust epidemiology eps experiment germ health hygiene icon illustration immune infected infection isolated laboratory lactobacillus line linear logo medical microbiology microscope microscopic minimal mirco modern mold molecular molecule oraganism organism outline pandemic parasit parasitic pathogen pathogenic pictogram prebiotic probiotic probiotics round science set shape sick sign silhouette small spore style symbol system technology thin vector