blattella germanica, german cockroach, unhygienic
virus, bacteria, coronavirus
bacteria, bacterium, neisseria meningitidis
windmill, couple, bubble
intestines, gut, flora
virus, bacteria, coronavirus
virus, corona, covid-19
hands, soap, to wash
coronavirus, co, virus
bacteria, disease, escherichia coli
coronavirus, covid-19, quarantine
coronavirus, disease, virus
bacteria, bacillus, lactobacillus
