MRSA is defined as what?

• A. A type of bacteria that is resistant to many antibiotics and can cause hard-to-treat infections.
• B. A virus that causes common colds.
• C. A fungus used in antibiotics production.
• D. A health insurance policy.

Answer: (A)

MRSA is a type of bacteria, specifically methicillin-resistant Staphylococcus aureus. What makes it notable is its resistance to many antibiotics, including methicillin, which can make infections harder to treat with standard medicines. Infections can start as skin problems like boils or red, painful lumps, but MRSA can also lead to more serious infections if it spreads deeper into the body. It is not a virus, not a fungus, and not a health insurance policy, which is why those options don’t define MRSA. The core idea is that MRSA is a drug-resistant bacterium capable of causing a range of infections.