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Why Is MRSA so Dangerous?

July 06, 2021

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MRSA stands for methicillin-resistant Staphylococcus aureus. The specific strain of bacteria that causes MRSA is known as Staphylococcus aureus (S. aureus), commonly referred to as staph, and there are over 30 different types that can get you sick.

Microscopic Staph Bacteria
According to an article published by the National Center for Biotechnology Information (NCBI) titled "Predictors of Mortality in Staphylococcus Aureus Bacteremia," MRSA's incidence rate, or the number of new cases within a given period, out of 100,000 people, estimates that 20 to 50 people a year could have a case of infection. And out of those 20 to 50 people, between 10% and 30% could die from staph infections.

The NCBI article also stated that staph infections, including MRSA, "… account for a greater number of deaths than from AIDS, tuberculosis, and viral hepatitis combined."

Staph has been around a long time. It can exist on your skin without causing any problems, but when staph enters the body through cuts and gets into the bloodstream, that's when the person gets infected.

Staph was first identified in 1884 by German scientist Friedrich Julius Rosenbach. Staph infections were treated topically until the introduction of penicillin, the first antibiotic, in the 1940s. Then, treatment evolved to a variation of penicillin called methicillin. MRSA's resistance to this antibiotic is how it gets its name.

Old Microscope, Candles, Glasses, Books and Samples of Staph Bacteria on a Wooden Table
This is all described in further detail in an article, also published by the NCBI, titled, "Understanding the Fight Against Resistance: Hospital-Acquired Methicillin-Resistant Staphylococcus Aureus vs. Community-Acquired Methicillin-Resistant Staphylococcus Aureus."

The article explained that MRSA was initially only found in hospital settings and was suitably named hospital-acquired MRSA (HA-MRSA). Later on, MRSA spread to places outside hospitals and was then called community-acquired MRSA (CA-MRSA). The distinction between the two goes beyond the sites of contagion. CA-MRSA and HA-MRSA are two strains that have different virulence and resistance features.

However, nowadays, both variants are resistant to more than just methicillin and penicillin. They're also resistant to antibiotics like amoxicillin and oxacillin, as described by the Baylor College of Medicine: Methicillin-Resistant Staphylococcus Aureus (MRSA) article. But why is it that staph turned into MRSA in the first place?

Two Gloved Hands Holding Each a Petri Dish With Different Types of Staph Bacteria

Why Is MRSA Resistant to Antibiotics?

MRSA developed resistance to antibiotics as a natural evolutionary process. It has to do with the bacteria's exchange of genetic information of the same species, which we will go over soon. First, it's essential to mention the role of antibiotic over-prescription in the development of antibiotic resistance (AR) in bacteria like MRSA.

A study by the CDC revealed that 1 in every 3 antibiotic prescriptions is unnecessary. They found out that doctors often prescribed antibiotics to treat colds, the flu, or sore throats, which are respiratory conditions caused by viruses that do not respond to antibiotics.

When doctors prescribe (or over-prescribe) these antibiotics, they expose bacteria that's already in the body to antibiotics. Bacteria that are not specifically targeted by the antibiotic prescribed will not die. Instead, those bacteria will have the opportunity to adapt and develop resistance. Then, when those bacteria share their genes with others, they will pass along the same qualities.

The increase of antimicrobial resistance (AMR) in bacteria like MRSA prompted government agencies such as the CDC, FDA, and Department of Health and Human Services to develop a Public Health Action Plan to Combat Antimicrobial Resistance.

A Boxing Glove Covered In Bacteria Punching Open an Antibiotic Pill Spilling Its Contents
They're raising awareness about the dangers of overprescribing antibiotics. They collectively want to prevent bacteria like MRSA or other illness-causing germs from developing resistance to modern treatments.

AR is one of the most important global health challenges of our time. According to the "CDC's 2019 Antibiotic Resistance Threats Report," 28 million people acquire antibiotic-resistant infections (including MRSA) each year, just in the U.S., and of those people, about 35,000 of them perish. AR is a serious threat all around the world. We might use antibiotics to fight infections, but bacteria learn and fight back.

The CDC's article, "How Antibiotic Resistance Happens," states that MRSA's resistance to antibiotics comes from the bacteria's ability to "bypass the effects of the antibiotic."

Antibiotics target specific processes within the bacteria's cells. Bacteria like MRSA simply develop new processes to avoid using the ones targeted by the antibiotics.

Those new processes are stored in their DNA and can be shared with other bacteria of the same species. But there's been a recent new development on this front. Scientists are reevaluating what they previously thought they knew about the DNA exchange between species of staph bacteria.

New Development: Staph and S. epidermidis

In May of 2021, the German Center for Infection Research released an article called "From Harmless Skin Bacteria to Dreaded Pathogens," explaining that scientists have discovered how S. epidermidis, a relatively harmless bacteria, turns into a deadly pathogen that can cause "…infections in catheters, artificial joints, heart valves, and in the bloodstream."

Women Scientist Looking Through a Microscope Making a Discovery About S. Epidermidis Bacteria
The cell walls of bacteria are made up of teichoic acids that cover the surface of the bacteria. This study found that the S. epidermidis contained an extra gene cluster that could allow bacteria to develop teichoic acids in its cell walls that are normally found in staph bacteria.

Researchers found that this gene cluster allows the S. epidermidis to penetrate the tissues of the human host and become dangerous. And it also makes the exchange of genetic information between staph and S. epidermidis, two different species, possible. This new development is considered a step forward to developing a vaccine and better treatments for infections caused by both bacteria.

As it stands today, the main method of treating MRSA is with antibiotics. Since prevention is the best course of action, we have outlined a few simple recommendations to help you reduce the risk of infection from both CA-MRSA and HA-MRSA.

Treatments and Prevention

According to the CDC's MRSA index, these are the steps you need to take to reduce the risk of acquiring MRSA:

A Man Washing His Hands With Soap to Prevent the Spread of Staph Bacteria
  • Wash your hands regularly and practice good hygiene, especially after exercising and more so if you exercise in a gym. Gyms are hotbeds for germs and bacteria, including MRSA.
  • Always clean any type of wound, even if it's just a scratch, and make sure you keep it covered until it has healed.
  • Since MRSA can be spread by contact with infected surfaces, avoid sharing personal items like towels and razors.
  • Sanitize and disinfect regularly, especially in medical facilities.
  • If you think you might have an infection, don't wait too long. Get treated early.
But how can you know if you need to seek a doctor to get treated? First, pay attention to your symptoms. The symptoms of being infected with MRSA vary. It depends on what part of your body caught the infection.

For example, if you were infected with MRSA on your skin, you would probably see swelling and redness. Your skin will feel warm to the touch, and you might experience some pain. MRSA can be difficult to diagnose without laboratory tests to tell if the infection was indeed caused by it or by another type of bacteria. Getting medical care early on is the best course of action if you think you might have MRSA.

The Cleveland Clinic, in its "Methicillin-Resistant Staphylococcus Aureus (MRSA)" article, outlines how MRSA is treated:
  • Treatment by source control: In this line of treatment, doctors will try to reduce the number of bacteria by, for example, draining abscesses.
  • Treatment with antibiotics: Oral antibiotics like clindamycin or trimethoprim/sulfamethoxazole may be prescribed.
A Woman Doctor Examining a Rash on an Older Woman's Arm
For more information on specific treatments for MRSA and the antibiotics that can treat it, please visit the IDSA Guidelines on the Treatment of MRSA Infections in Adults and Children on the American Family Physician website.

Because of its resistance to antibiotics, the best course of action is prevention.

Sanitizing and disinfecting surfaces is the key to preventing staph infections, but just using any product or service to sanitize and disinfect isn't going to cut it. It's important to use the right products that are EPA-registered, and on the label, it should list that it can kill MRSA and other germs of concern.

It's also crucial to follow the instructions on the product's label since most solutions need to sit and dwell on surfaces to work. They also have varying strengths, so review the label's instructions to adjust concentration levels by diluting them with distilled water.

The best way to sanitize and disinfect to prevent MRSA is to hire a service like Germinator to provide 360 degrees of protection for surfaces, air, and you, creating livable, touchable Germinator Safe Zones.

Here's how our patent-pending process will take care of your surfaces:

Germinator's Patent-Pending Process

ATP Test SwabStep 1 – Test Surfaces:

We first test your surfaces for ATP using a luminometer to detect light that can come from cellular activity. This measurement immediately tells us the level of cleanliness on your surfaces.

HOCl or hypochlorous acid solutionStep 2 – Application of HOCl Surface Treatment:
Our HOCl or hypochlorous acid solution is a one-step cleaner and broad-spectrum sanitizer and disinfectant treatment. Derived from naturally occurring minerals, HOCl not only eliminates odors at their source but kills a wide range of bacteria, including Staphylococcus aureus, MRSA, Salmonella enterica and Pseudomonas aeruginosa, and viruses including norovirus, rotavirus and adenovirus on hard, non-porous, environmental surfaces. It meets the Association of Official Agricultural Chemists (AOAC) germicidal spray standards for Hospital-Grade Disinfection and is on the EPA N List of products determined to meet the criteria for use against SARS-CoV-2, the virus that causes COVID-19. As a result, this treatment will eliminate bacteria and viruses that may reside in your environment without the use of harsh chemicals or fumes.


ShieldStep 3 – Application of Bacteriostatic Finish:

The Shield is a water-based quaternary ammonium compound that imparts a durable bacteriostatic finish to a wide range of non-food contact surfaces. It is EPA-registered as effective against the growth of mold, mildew, algae and odor-causing bacteria. This application creates an invisible barrier that combats deterioration and discoloration and promotes freshness for up to three months.

These solutions are applied with an electrostatic sprayer, which is the most efficient and effective means of delivering the products to the intended application sites.

ATP Test PassStep 4 – Retest Surfaces:

After our surface treatment and protectant services, we retest to ensure the surfaces have achieved the intended results.






Our Aerus products powered with ActivePure Technology will help you protect the air you breathe from contaminants. Visit our Germinator-Aerus Distributor page to learn more about them.

And for personal sanitizing protection, visit our Safe Zone Solutions page, where you will find all the sanitizing and disinfecting products that Germinator has to offer to help protect you against the new world of germs. Call us at (816) 710-GERM (4376). We will be happy to answer any questions you may have about our services and products to help you enjoy your very own Germinator Safe Zone.

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