disease-causing microbes have a negative impact on the body
catalase_negative_bacterium is not bacterium. hazardous_waste has negative_environmental_impact bacteria is not one_cause_of_illness. catalase_negative_bacterium is bacterium. gram_negative_bacterium is bacterium. gram_negative_bacterium is not bacterium. bacteria is one_cause_of_illness. hazardous_waste has not negative_environmental_impact allergy is negative_reaction. microbe is microorganism.