What are germs? What's the difference between a bacteria and virus? How are germs spread? How can germs be eliminated? We're glad you asked. Find all this and more.
A microorganism is an organism that is too small to be seen by the naked eye — in other words, it is "microscopic." Microorganisms include bacteria, viruses, fungi, parasites, and prions, among others. Microorganisms exist virtually everywhere, and most are harmless. In fact, many microorganisms promote good health.
But when a microorganism has the potential to be harmful, it is often referred to as a "germ." There are different types of common germs that can be controlled through basic hygiene and cleaning practices. These include:
Germs live in soil, air, water, food, animals, plants, and people. Even most germs with a potential to cause illness can often be helpful. For example, many bacteria that live inside the human body are beneficial, and exposure to other germs can help humans build up their immune systems and stay healthy.
But in some instances, exposure to harmful germs can cause conditions like foodborne illness, diarrhea, and other diseases. Some are easily managed and can go away on their own; others are more serious and can lead to severe illness. It's important to practice healthy habits and prevent the spread of these germs.
Germs can be spread via:
How and Where Germs Survive
Germs thrive in moist conditions. In some instances, germs can live on surfaces for hours — and even days. For example, according to the Mayo Clinic, flu germs can live on surfaces for up to 48 hours... and CDC has noted that staph and MRSA germs can survive on some surfaces for hours, days or even months, depending on such factors as temperature and humidity.
The important thing to note is that while surfaces may look clean, it can contain many infectious germs. You need to disinfect to reduce germs on surfaces.
Cleaning versus Disinfection
Cleaning and disinfecting are not the same thing. Cleaning removes germs from surfaces, whereas disinfecting actually destroys them.
Cleaning with soap and water to remove dirt and most of the germs is often enough for daily cleaning. However, CDC stresses that it's important to routinely clean and disinfect surfaces, too, to prevent the spread of germs and protect your family.
There are different categories of germ reduction products, as well:
Examples of Illness Caused by Germs
Viruses are Very Challenging Germs
Viruses are different from bacteria and mold/mildew. They are extremely small — only 1/100th of the size of bacteria or mold/mildew. But unlike bacteria or mold/mildew, which are capable of growing on their own, viruses need a host to infect in order to reproduce. It is through this process that viruses cause disease.
In many cases, it only takes one virus particle to make you sick. That's why frequent handwashing and surface disinfection are important measures to help control the spread of disease — especially those caused by viruses.
Read more about reducing the spread of germs in Cold and Flu.