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MRSA is a strain of Staphylococcus aureus (S. aureus) bacteria. S. aureus is a common type of bacteria that normally live on the skin and sometimes in the nasal passages of healthy people. MRSA refers to S. aureus strains that do not respond to some of the antibiotics used to treat staph infections
The bacteria can cause infection when they enter the body through a cut, sore, catheter, or breathing tube. The infection can be minor and local (for example, a pimple), or more serious (involving the heart, lung, blood, or bone).
MRSA infections are grouped into two types:
•Healthcare-associated MRSA (HA-MRSA) infections occur in people who are or have recently been in a hospital or other health-care facility. Those who have been hospitalized or had surgery within the past year are at increased risk. MRSA bacteria are responsible for a large percentage of hospital-acquired staph infections.
•Community-associated MRSA (CA-MRSA) infections occur in otherwise healthy people who have not recently been in the hospital. The infections have occurred among athletes who share equipment or personal items (such as towels or razors) and children in daycare facilities. Members of the military and those who get tattoos are also at risk. The number of CA-MRSA cases is increasing.
Serious staph infections are more common in people with weak immune systems. This includes patients have been in hospitals or other health care centrs, such as nursing homes and dialysis centers. When a person gets from these settings, it’s known as health care-associated MRSA (HA-MRSA). HA-MRSA infections typically are associated with invasive procedures or devices, such as surgeries, intravenous tubing or artificial joints.
A much wider community among the healthy people gets MRSA infection. This form, community-associated MRSA (CA-MRSA), often begins as a painful skin boil. It’s spread by skin-to-skin contact. At-risk populations include groups such as high school wrestlers, child care workers and people who live in crowded conditions, living togather with infected people.
Signs and symptoms:
Staph skin infections, including MRSA, generally start as small red bumps that resemble pimples, boils or spider bites. These can quickly turn into deep, painful abscesses that require surgical draining. Sometimes the bacteria remain confined to the skin. But they can also burrow deep into the body, causing potentially life-threatening infections in bones, joints, surgical wounds, the bloodstream, heart valves and lungs.
Other symptoms may include:
•Drainage of pus or other fluids from the site
•Skin abscessSkin abscess
•Warmth around the infected area
Symptoms of a more serious staph infection may include:
•Chest painChest pain
•General ill feeling (malaisemalaise)
•Muscle achesMuscle aches
•Shortness of breathShortness of breath
MRSA infections start out as small red bumps that can quickly turn into deep, painful abscesses.
Sometimes the bacteria remain confined to the skin. But they can also burrow deep into the body, causing potentially life-threatening infections in bones, joints, surgical wounds, the bloodstream, heart valves and lungs.
Anyone can get a Staph infection. People are more likely to get a Staph infection if they have:
*Skin-to-skin contact with someone who has a Staph infection
*Contact with items and surfaces that have Staph on them
*Openings in their skin such as cuts or scrapes
*Crowded living conditions
* Poor hygiene
Most Staph skin infections are minor and may be easily treated. Staph also may cause more serious infections, such as infections of the bloodstream, surgical sites, or pneumonia. Sometimes, a Staph infection that starts as a skin infection may worsen. It is important to contact your doctor if your infection does not get better.
Although the survival tactics of bacteria contribute to antibiotic resistance, humans bear most of the responsibility for the problem. Leading causes of antibiotic resistance include:
*Unnecessary antibiotic use in humans. Like other superbugs, MRSA is the result of decades of excessive and unnecessary antibiotic use. For years, antibiotics have been prescribed for colds, flu and other viral infections that don’t respond to these drugs, as well as for simple bacterial infections that normally clear on their own.
*Antibiotics in food and water. Prescription drugs aren’t the only source of antibiotics. In the United States, antibiotics can be found in beef cattle, pigs and chickens. The same antibiotics then find their way into municipal water systems when the runoff from feedlots contaminates streams and groundwater. Routine feeding of antibiotics to animals is banned in the European Union and many other industrialized countries. Antibiotics given in the proper doses to animals who are sick don’t appear to produce resistant bacteria.
*Germ mutation. Even when antibiotics are used appropriately, they contribute to the rise of drug-resistant bacteria because they don’t destroy every germ they target. Bacteria live on an evolutionary fast track, so germs that survive treatment with one antibiotic soon learn to resist others. And because bacteria mutate much more quickly than new drugs can be produced, some germs end up resistant to just about everything. That’s why only a handful of drugs are now effective against most forms of staph.
Because hospital and community strains of MRSA generally occur in different settings, the risk factors for the two strains differ.
Risk factors for hospital-acquired (HA) MRSA include:
*A current or recent hospitalization. MRSA remains a concern in hospitals, where it can attack those most vulnerable â€” older adults and people with weakened immune systems, burns, surgical wounds or serious underlying health problems. A 2007 report from the Association for Professionals in Infection Control and Epidemiology estimates that 1.2 million hospital patients are infected with MRSA each year in the United States. They also estimate another 423,000 are colonized with it.
*Residing in a long-term care facility. MRSA is far more prevalent in these facilities than it is in hospitals. Carriers of MRSA have the ability to spread it, even if they’re not sick themselves.
*Invasive devices. People who are on dialysis, are catheterized, or have feeding tubes or other invasive devices are at higher risk.
*Recent antibiotic use. Treatment with fluoroquinolones (ciprofloxacin, ofloxacin or levofloxacin) or cephalosporin antibiotics can increase the risk of HA-MRSA.
These are the main risk factors for community-acquired (CA) MRSA:
*Young age. CA-MRSA can be particularly dangerous in children. Often entering the body through a cut or scrape, MRSA can quickly cause a wide spread infection. Children may be susceptible because their immune systems aren’t fully developed or they don’t yet have antibodies to common germs. Children and young adults are also much more likely to develop dangerous forms of pneumonia than older people are.
*Participating in contact sports. CA-MRSA has crept into both amateur and professional sports teams. The bacteria spread easily through cuts and abrasions and skin-to-skin contact.
*Sharing towels or athletic equipment. Although few outbreaks have been reported in public gyms, CA-MRSA has spread among athletes sharing razors, towels, uniforms or equipment.
*Having a weakened immune system. People with weakened immune systems, including those living with HIV/AIDS, are more likely to have severe CA-MRSA infections.
*Living in crowded or unsanitary conditions. Outbreaks of CA-MRSA have occurred in military training camps and in American and European prisons.
*Association with health care workers. People who are in close contact with health care workers are at increased risk of serious staph infections.
Doctors diagnose MRSA by checking a tissue sample or nasal secretions for signs of drug-resistant bacteria. The sample is sent to a lab where it’s placed in a dish of nutrients that encourage bacterial growth (culture). But because it takes about 48 hours for the bacteria to grow, newer tests that can detect staph DNA in a matter of hours are now becoming more widely available.
In the hospital, you may be tested for MRSA if you show signs of infection or if you are transferred into a hospital from another healthcare setting where MRSA is known to be present. You may also be tested if you have had a previous history of MRSA.
Treatment for a Staph skin infection may include taking an antibiotic or having a doctor drain the infection. If you are given an antibiotic, be sure to take all of the doses, even if the infection is getting better, unless your doctor tells you to stop taking it. Do not share antibiotics with other people or save them to use later.
Both hospital and community associated strains of MRSA still respond to certain medications. In hospitals and care facilities, doctors generally rely on the antibiotic vancomycin to treat resistant germs. CA-MRSA may be treated with vancomycin or other antibiotics that have proved effective against particular strains. Although vancomycin saves lives, it may grow resistant as well; some hospitals are already seeing outbreaks of vancomycin-resistant MRSA. To help reduce that threat, doctors may drain an abscess caused by MRSA rather than treat the infection with drugs.
How do I keep Staph infections from spreading?
Wash your hands often or use an alcohol-based hand sanitizer
Keep your cuts and scrapes clean and cover them with bandages
Do not touch other people’s cuts or bandages
Do not share personal items like towels or razors.
Hospitals are fighting back against MRSA infection by using surveillance systems that track bacterial outbreaks and by investing in products such as antibiotic-coated catheters and gloves that release disinfectants.
Still, the best way to prevent the spread of germs is for health care workers to wash their hands frequently, to properly disinfect hospital surfaces and to take other precautions such as wearing a mask when working with people with weakened immune systems.
In the hospital, people who are infected or colonized with MRSA are placed in isolation to prevent the spread of MRSA to other patients and healthcare workers.Visitors and healthcare workers caring for isolated patients may be required to wear protective garments and must follow strict handwashing procedures.
What you can do in the hospital
Here’s what you can do to protect yourself, family members or friends from hospital-acquired infections.
*Ask all hospital staff to wash their hands or use an alcohol-based hand sanitizer before touching you â€” every time.
Wash your own hands frequently.
*Make sure that intravenous tubes and catheters are inserted under sterile conditions, for example, the person inserting them wears a mask and sterilizes your skin first.
What you can do in your community:-
Protecting yourself from MRSA in your community â€” which might be just about anywhere â€” may seem daunting, but these
common-sense precautions can help reduce your risk:
*Wash your hands. Careful hand washing or use an alcohol-based hand sanitizer remains your best defense against germs. Scrub hands briskly for at least 15 seconds, then dry them with a disposable towel and use another towel to turn off the faucet. Carry a small bottle of hand sanitizer containing at least 62 percent alcohol for times when you don’t have access to soap and water.
*Keep personal items personal. Avoid sharing personal items such as towels, sheets, razors, clothing and athletic equipment. MRSA spreads on contaminated objects as well as through direct contact.
*Keep wounds covered. Keep cuts and abrasions clean and covered with sterile, dry bandages until they heal. The pus from infected sores may contain MRSA, and keeping wounds covered will help keep the bacteria from spreading.
Shower after athletic games or practices. Shower immediately after each game or practice. Use soap and water. Don’t share towels.
*Sit out athletic games or practices if you have a concerning infection. If you have a wound that’s draining or appears infected â€” for example is red, swollen, warm to the touch or tender â€” consider sitting out athletic games or practices until the wound has healed.
*Sanitize linens. If you have a cut or sore, wash towels and bed linens in a washing machine set to the “hot” water setting (with added bleach, if possible) and dry them in a hot dryer. Wash gym and athletic clothes after each wearing.
*Get tested. If you have a skin infection that requires treatment, ask your doctor if you should be tested for MRSA. Doctors may prescribe drugs that aren’t effective against antibiotic-resistant staph, which delays treatment and creates more resistant germs. Testing specifically for MRSA may get you the specific antibiotic you need to effectively treat your infection.
*Use antibiotics appropriately. When you’re prescribed an antibiotic, take all of the doses, even if the infection is getting better. Don’t stop until your doctor tells you to stop. Don’t share antibiotics with others or save unfinished antibiotics for another time. Inappropriate use of antibiotics, including not taking all of your prescription and overuse, contributes to resistance. If your infection isn’t improving after a few days of taking an antibiotic, contact your doctor.
Disclaimer: This information is not meant to be a substitute for professional medical advise or help. It is always best to consult with a Physician about serious health concerns. This information is in no way intended to diagnose or prescribe remedies.This is purely for educational purpose