There are examples of bacteria growing in [[mutualism|mutualistic]] rather than parasitic fashion. The digestive systems of most organisms, including humans, depend on the presence of beneficial bacteria in order to properly digest food, especially plant matter.
Infections may be defeated by the use of [[Antibiotics]], agents that can kill the bacteria that cause infections. In recent years, very powerful infections known as [http://www.mayoclinic.com/health/mrsa/DS00735<!--FSDD 4FSP TW55 GHS0 KKJ6--> Methicillin-resistant Staphylococcus aureus] or [[MRSA]] have wreaked havoc in hospitals around the world, as they are caused by bacteria that have become resistant to multiple drugs that had previously been used to combat them.
==References==
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[[Category: Medicine]]