Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
Many antibiotics are not easily destroyed when they escape into the environment. Consequently, we could be creating a huge reservoir of antibiotic-resistant microbes and resistance genes in our soil, rivers, and lakes by dumping medical and agricultural waste198 (see Box 10-4). Although gene exchange among microbes occurs only rarely, even rare events can be significant when astronomically large numbers of microbes are involved.