Antibiotic-resistant bacteria can keep people sicker longer, and some people may not be able to recover at all. Children, the elderly, and those with weakened immune systems (including cancer, HIV/AIDS, and transplant patients) are particularly vulnerable because their immune systems are not as vigorous as those of healthy adults.
The Centers for Disease Control classifies Methicillin-Resistant Staphylococcus Aureus (MRSA) as a serious threat. There are over 80,000 severe MRSA infections per year, with over 11,000 deaths from MRSA each year. Staph bacteria, including MRSA, are one of the most common causes of healthcare-associated infections.
Staphylococcus aureaus is a common bacterium present throughout nature. The organism can exist on the bodies of both humans and animals (on skin, in the nose, etc.) and can cause no damage. If the bacterium enters a wound however, serious infection can occur.