Antibiotic-resistant superbugs started on animal farms The growing emergence and prevalence of antibiotic-resistant superbugs with the capacity of killing humans was not always the gravely serious problem it really is today, as a few of these deadly strains actually originated as benign pathogens in individuals diagnosed on time . However the widespread practice of feeding antibiotics to livestock living on factory farms reaches least among the primary triggers which has triggered these once-harmless bacterial strains to be vicious killers.