But bacteria can cause trouble too, as with cavities , urinary tract infections , ear infections , or strep throat. Antibiotics are used to treat bacterial infections. Viruses are even smaller than bacteria. They aren't even a full cell. They need to use another cell's structures to reproduce. This means they can't survive unless they're living inside something else such as a person, animal, or plant.
Viruses can only live for a very short time outside other living cells. For example, viruses in infected body fluids left on surfaces like a doorknob or toilet seat can live there for a short time.
They'll die quickly unless a live host comes along. When they've moved into someone's body, though, viruses spread easily and can make a person sick. Antibiotics are not effective against viruses.
Antiviral medicines have been developed against a small, select group of viruses. They use pre-existing carbon sources in their environment and use the energy from chemical reactions.
Living Yes Characteristics of both living and non-living. Yes Yes Transmission 1. Direct contact with an infected person. Contaminated food or water. Dirty objects or infected animals. By direct contact with infected individuals. By contact with contaminated objects. By inhalation.
By animals that act as hosts. Transmitted through a number of ways, which include transmission by air and contact. Reproduction Reproduce by splitting into two cells binary fission. Reproduction can take place in multiple ways like binary fission, budding etc.
Washing your hands is the best way to stop germs from spreading. Learn all about the best way to wash your hands in this article for kids.
Did you know that the most important thing you can do to keep from getting sick is to wash your hands? These bacterial infections can cause diarrhea, cramping, abdominal pain, and fever. Good hand-washing and food safety habits can help prevent them. Shigella are bacteria that can infect the digestive tract and cause a wide range of symptoms, from diarrhea, cramping, vomiting, and nausea, to more serious complications and illnesses.
Coxsackievirus infections can spread from person to person. In most cases, the viruses cause mild flu-like symptoms, but can lead to more serious infections. The good news is that there are some simple ways to protect yourself from being infected.
Find out how. Simple precautions can help protect your kids from becoming infected. When skin is punctured or broken for any reason, staph bacteria can enter the wound and cause an infection. But good hygiene can prevent many staph infections. Learn more. Find out how to protect yourself. The germs that get into food and cause food poisoning are tiny, but can have a powerful effect on the body.
Find out what to do if you get food poisoning — and how to prevent it. Taking antibiotics too often or for the wrong reason has led to a dangerous rise in bacteria that no longer respond to medicine. Find out what you can do to prevent antibiotic overuse. Read this article to learn more. Listeriosis is a serious infection caused by eating contaminated food. It mostly affects pregnant women, newborns, and adults with weakened immune systems.
You know they can hurt you, but what are these invisible creatures? Find out in this article for kids. An abscess is a sign of an infection, usually on the skin. Find out what to do if your child develops one. Why is food safety important?
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