This infectious viral disease has many symptoms, from chills, fever, and aching muscles to coughing and sneezing to nausea and vomiting. It is highly infectious; many people get an injection to protect them from this disease. It is transmitted through the air, from person to person, by coughing and sneezing. This infectious disease is A) asthma. B) the flu. C) strep throat. Eliminate D) the common cold.

B) No, many microorganisms, like those in your gut, are beneficial

As is turns out there are only about 100 different bacteria which are pathogenic. All other bacteria are completely harmless and, as this question states, some are crucial for proper human health as we exist in a symbiotic relationship with them. Bacteria in the large colon provide nutrients to us, and play an important role in the development of the immune system.