Stomach flu or gastroenteritis is caused by a contagious virus. Learn about stomach flu symptoms and home remedies to relieve dehydration and diarrhea. Stomach flu or gastroenteritis is caused by a contagious virus. Learn about stomach flu symptoms and home remedies to relieve dehydration and diarrhea.
Antibiotic resistance is the ability of bacteria to resist the effects of an antibiotic â that is, the bacteria are not killed, and their growth is not stopped. Resistant bacteria survive exposure to the antibiotic and continue to multiply in the body, potentially causing more harm and spreading to other animals or people.
In many respects, this activity is so dramatic, and the genes so versatile and dispersed, that it truly rivals science fiction. The recognition that bacteria could become multidrug-resistant came as a surprise in the late 1950s and early 1960s.Over the span of a few decades, resistance to single antibiotics has been replaced with multidrug resistance.hen confronted with an antibiotic, they can destroy it with enzymes, rendering it harmless. Some can transport the antibiotic out of a cell via what are called efflux pumps, thereby protecting the inner cell. Alternatively, they can substitute a drug-resistant target for one that is susceptible to the antibiotic.