In one sentence, describe what the following article is about:

If you have a cut that isn't healing properly, MRSA may be the cause. Infections caused by MRSA don't necessarily look different from other types of infections. Here are the hallmarks of an MRSA infection:  A red, raised sore that looks like a spider bite A swollen and pus-filled cut A fluid-filled blister with a honey-colored crust An area of red, firm skin that is warm or hot to the touch Since MRSA is spread by skin contact, it's wise to get tested if you have been in contact with someone you know to have MRSA. This will include elderly individuals, those who are infected with HIV, or someone with cancer.

Summary:
Know when to suspect an MRSA infection. Get tested if you've had contact with someone else who has MRSA. Get tested if your immune system is compromised.