They're all around us all the time. Most of the time we don't notice, but what we don't know can hurt us. Bacteria is everywhere, even in the cleanest household, waiting for opportunities to settle in and start multiplying; they lurk unseen around our home, waiting for an open cut or an unwashed hand rubbing our mouth or eyes. Usually our bodies can handle it if we're in good health; in fact, the bacteria we encounter every day helps our immune system to strengthen and adapt. It's very easy under the right circumstances, however, for the delicate balance of coexistence between bacteria and other living things to shift, especially when it encounters a weakened immune system, as with babies, the elderly, and those with diabetes, HIV or cancer - and when it does the consequences can be serious - even deadly.
The problem has become even more consuming over the last few decades: we thought we had it licked with the advent of antibiotics, but as bacteria has evolved and humanity has overused antibiotics, natural selection has helped to develop a gene for antibiotic resistance, making some cases more difficult to treat. It's now able to pass that gene to other bacteria, creating a generation of superbugs and a world of trouble for those who develop infections and the medical professionals who treat them.
The problem has become even more consuming over the last few decades: we thought we had it licked with the advent of antibiotics, but as bacteria has evolved and humanity has overused antibiotics, natural selection has helped to develop a gene for antibiotic resistance, making some cases more difficult to treat. It's now able to pass that gene to other bacteria, creating a generation of superbugs and a world of trouble for those who develop infections and the medical professionals who treat them.
No comments:
Post a Comment