Germs are everywhere. You practically live in a world full of germs. No matter how often you wash your hands and how many times you take a bath, you cannot totally get rid of them. But not all germs are harmful. In fact, some germs can keep you healthy. That is why it is very important that you should know which ones are beneficial and which ones can pose danger to your health.
In every illness such as colds, fever, and sore throat, you can almost be sure that germs are the ones responsible for it. Germs are a multitude of microscopic invaders that include bacteria, viruses, parasites, and other infectious organisms that can be found in the air that you breathe, in water that we drink or on unclean surfaces and not some infected animals. It can also be found in the soil, on plants, on your food, and even inside your own body. They are practically just on every surface that you could think of. They range in size from the microscopic virus to single-celled bacteria to parasitic worms that can grow to more than several feet in length.
Although your immune system can protect you from legions of infectious microbes, there are some bacteria and viruses that...