תרגול אנסין – חלק ב – אנסין 5

The discovery of antibiotics revolutionized modern medicine by providing a way to treat bacterial infections that once caused widespread illness and death. When harmful bacteria enter the body, they multiply rapidly, often overwhelming the immune system. Antibiotics work by either killing these bacteria directly or by preventing them from multiplying, giving the body time to fight off the infection.

There are two main classes of antibiotics: bactericidal and bacteriostatic. Bactericidal antibiotics, such as penicillin, actively kill bacteria by interfering with the formation of their cell walls, causing the bacteria to burst and die. Bacteriostatic antibiotics, such as tetracycline, do not kill bacteria outright but instead stop them from reproducing. This allows the immune system to gradually destroy the remaining bacteria.

Different antibiotics are used for different kinds of infections. For example, penicillin is effective against many respiratory infections, while tetracycline is often prescribed for acne or urinary tract infections. However, antibiotics are not effective against viral infections such as colds or influenza, since viruses reproduce in a completely different way than bacteria.

Another limitation of antibiotics is the issue of misusing them. For example: taking them for viral illnesses or not completing a full prescribed course. These have contributed to the rise of antibiotic resistance, a major global health concern today.