What is Staph?
Staph is a type of bacteria. Up to one-third of all people carry Staph on their skin or in their nose and are "colonized", but not infected, with Staph. They have no symptoms, yet they can pass the germ to others.
Ordinary Staph is usually harmless unless it enters the body through a cut or wound. Even then, it typically only causes minor skin infections (such as pimples and boils) that heal without antibiotics. In fact, Staph is one of the most common causes of minor skin infections in the United States. Unfortunately, ordinary Staph can also sometimes lead to a more serious infection called MRSA. People at highest risk are the elderly, people with open wounds or weak immune systems, and very young children. MRSA is seen most often in nursing homes and hospitals, where Staph bacteria can get into surgical wounds and the bloodstream and cause a serious form of pneumonia.
What is MRSA?
MRSA (methicillin-resistant Staphylococcus aureus) is a serious type of Staph infection that cannot be cured by common antibiotics (methicillin, oxacillin, penicillin and amoxicillin). MRSA is treatable with other drugs and medical procedures. An estimated 1.2 million hospital patients in the United States are infected with MRSA each year; another 423,000 US hospital patients are colonized with MRSA each year.
Remember that many people carry Staph infection without having any symptoms. While 25% to 30% of the population may be colonized with Staph, only about 1% of people have been colonized with MRSA.
What is Community-Acquired MRSA (CA-MRSA)?
Most MRSA cases occur in nursing homes and hospitals. However, 10-15% of MRSA cases occur in people who have not been in the hospital or had surgery, dialysis, catheterization or other medical procedures in a year or more. These cases are called community-acquired MRSA (CA-MRSA). These usually show up as skin infections— pimples or boils or abscesses— and usually occur in people who are otherwise healthy.
What Are the Symptoms of CA-MRSA?
The most common signs of any sort of Staph infection are:
- Redness, swelling, and tenderness at the site of what may look like a pimple
- A painful, pus-filled rash
- What appears to be a cluster of severely infected spider bites,
- Impetigo with fluid-filled blisters
- Blisters or pus-filled boils or abscesses.
Sometimes people will notice more than one sore at a site. Some people with MRSA will have multiple lesions (sores) that look like spider bites. The involved site is red, swollen, and painful and may have pus or other drainage.
More serious Staph infection may lead to bloodstream infections or pneumonia. Symptoms may include shortness of breath, fever, and chills.
Do People Die from CA-MRSA Infections?
On rare occasions, community-acquired MRSA can cause life-threatening illness and death, even when treated quickly. However, in the vast majority of cases, community-acquired MRSA infections are limited to the skin and do not result in severe complications.
Prevention and Treatment
Do I Report Cases of MRSA to DPH?
- Laboratory reporting under the Hospital Infection Disclosure Act: Inpatient MRSA bloodstream infections must be reported as a LabID event through the National Healthcare Safety Network.
- Outbreaks of Healthcare Associated MRSA: Outbreaks of MRSA in health care facilities should be immediately reported to DPH by the facility as defined on the DPH List of Reportable Conditions.
- Outbreaks of Community-Acquired MRSA (CA-MRSA):
- Confirmed or suspected CA-MRSA outbreaks should be reported to DPH immediately by phone. If you have any questions about reporting a possible CA-MRSA cluster, please contact your local public health department.
- Reporting of possible clusters of CA-MRSA cases is consistent with South Carolina law requiring the reporting of diseases and conditions to your state or local public health department. (State Law # 44-29-10 and Regulation # 61-20) as per the DPH List of Reportable Conditions.
- Federal HIPAA legislation allows disclosure of protected health information, without consent of the individual, to public health authorities to collect and receive such information for the purpose of preventing or controlling disease. (HIPAA 45 CFR §164.512).
- Individual Cases of MRSA skin and soft tissue infections: Individual cases of MRSA skin and soft tissue infection occur commonly in all settings in the community and are not reportable. It is possible for several individual cases of MRSA skin and soft tissue infections to occur in the same group setting, such as a school, without evidence of close contact between the cases. In that event, several cases would not be considered an outbreak.
Additional Information
Why are We Hearing So Much About MRSA?
Obviously, the tragic deaths of several children from community-acquired MRSA have focused attention on the infection. However, MRSA is not really a new infection. MRSA has been around in nursing homes and hospitals for several decades and in the community at large since the 1990s.
Many hospitals are beginning to use surveillance systems to track bacterial outbreaks, so the public is hearing more about these infections.
In the past, MRSA infections were mostly seen in hospitals. Now they are prevalent in community settings, too. Because the occurrence of these infections in community settings is relatively new, some people become alarmed when they hear about them.
The news media are also carrying more stories about MRSA where they use the term "superbug." The term "superbug" may make people think that there are no antibiotics that will work against MRSA. This is not the case.
Resources
For more information, contact your local DPH public health department, or visit one of the resources listed below:
Centers for Disease Control and Prevention (CDC)
- Information on CA-MRSA for the Public
- Frequently Asked Questions about MRSA in Schools
- Information on CA-MRSA for Health Care Professionals
- MRSA Educational posters
DPH
Other Resources
- Massachusetts Department of Public Health
- Tacoma-Pierce County (WA) Health Department
- MRSA Resources for Schools (Includes information for athletic departments and custodial staff)
- Cleaning Checklist for School Athletic Programs (pdf)
- School Custodian Guidance (pdf)
- Charlotte-Mecklenburg (NC) Health Department
- Information about Community-Associated MRSA (Includes a link to a video on MRSA prevention for sports teams)
- National School Public Relations Association (NSPRA)
- Classroom risk for transmission of MRSA, Children's Hospital in St. Louis (pdf)