Contact plus isolation is a heightened level of infection precautions used in hospitals for germs that are especially hard to kill on surfaces and hands. It includes everything in standard contact isolation (gown, gloves, private room) but adds stricter hand-washing rules and stronger cleaning agents. The two infections most commonly triggering contact plus precautions are C. difficile (a gut infection that causes severe diarrhea) and Candida auris (a drug-resistant fungus).
If you’ve seen this term on a sign outside a hospital room, or been told a loved one is on contact plus, here’s what it means in practice and why these extra steps matter.
How Contact Plus Differs From Standard Contact Precautions
Standard contact precautions are used for patients carrying drug-resistant bacteria like MRSA, VRE, or other organisms spread by touch. They require staff and visitors to wear a gown and gloves when entering the room, then clean their hands on the way out. The room is wiped down with a hospital-approved disinfectant.
Contact plus keeps all of those requirements and adds two critical upgrades:
- Mandatory soap-and-water hand washing. When leaving a contact plus room, everyone must wash with soap and water rather than simply using alcohol-based hand sanitizer. Alcohol rub is acceptable on the way in, but not on the way out.
- Sporicidal cleaning products. Standard disinfectants can’t reliably destroy the spores produced by C. difficile or C. auris. Contact plus rooms must be cleaned with bleach-based solutions (sodium hypochlorite) or hydrogen peroxide products that are EPA-registered to kill these spores. Many hospitals also use UV-light disinfection as an extra step after manual cleaning.
The reason for both changes comes down to the biology of the germs involved. C. difficile, for example, forms tough spores that survive on bedrails, call buttons, and bathroom surfaces for months. Alcohol hand sanitizer does not kill these spores, and neither do many common hospital disinfectants. Soap and water physically wash spores off the hands, and bleach-based cleaners destroy them on surfaces.
Which Infections Require Contact Plus
The most common trigger is C. difficile, a bacterial infection of the colon that causes watery diarrhea, abdominal pain, and fever. It spreads easily in healthcare settings because its spores are shed in stool and can coat nearby surfaces. Patients who have recently taken antibiotics are especially vulnerable, since antibiotics disrupt the normal gut bacteria that usually keep C. difficile in check.
The other major trigger is Candida auris, a fungal infection that has emerged as a serious hospital threat in recent years. C. auris can colonize the skin and persist in the environment for weeks. It resists many standard antifungal medications and, like C. difficile, is not reliably killed by routine disinfectants.
Some hospitals add other hard-to-kill organisms to their contact plus list depending on local outbreak patterns, but C. difficile and C. auris are the two you’ll see most often.
What Visitors Should Expect
If a family member is placed on contact plus precautions, you’ll notice a brightly colored sign posted on the door. It will typically say “CONTACT PLUS PRECAUTIONS” with a stop symbol and list what’s required before entering. That sign stays up until the room has been fully cleaned with sporicidal products after the patient is discharged or the precautions are lifted.
Before entering, you’ll put on a disposable gown and gloves, usually from a cart or dispenser outside the room. When you leave, you’ll remove both and drop them in a bin inside or just outside the door, then wash your hands thoroughly with soap and water at the nearest sink. If there’s any risk of splashing (helping with toileting, for example), face and eye protection may also be recommended.
You should avoid touching surfaces in the room unnecessarily and keep personal items like purses or phones outside when possible. Any medical equipment in the room, such as a blood pressure cuff or thermometer, is typically dedicated to that patient alone and won’t be shared with other rooms until it has been properly disinfected.
Why Soap and Water Matters Here
Alcohol-based hand sanitizers work well against most bacteria and viruses by breaking down their outer membranes. But C. difficile spores have a tough, protective coating that alcohol cannot penetrate. The CDC notes that washing with soap and water is the best way to physically remove germs from hands in most situations, and for spore-forming organisms it’s the only reliable option.
This is the single most important thing to remember if you’re visiting a contact plus room. A quick pump of hand sanitizer on your way out feels sufficient, but it leaves spores on your hands that you can then carry to other surfaces, other patients, or your own home. Take the time to scrub with soap and water for at least 20 seconds.
How Long Contact Plus Lasts
For C. difficile, precautions generally stay in place for the duration of the illness, meaning as long as the patient has active diarrhea. Many hospitals continue contact plus for at least 48 hours after symptoms resolve, though policies vary. Some facilities maintain precautions for the entire hospital stay as an extra safeguard, because patients can continue shedding spores even after they feel better.
For C. auris, the timeline can be longer and less predictable. The organism can colonize skin without causing symptoms, and clearance is difficult to confirm. Patients with weakened immune systems may shed infectious organisms for weeks or even months. In some cases, hospitals treat colonization as potentially permanent and flag the patient’s chart so that contact plus precautions are reinstated on future admissions.
The decision to discontinue precautions is based on a combination of symptom resolution, lab results, and the hospital’s own infection-control policies. There is no single universal standard for when it’s safe to stop, which is why you may see different practices at different facilities.
How Room Cleaning Works
Environmental cleaning in a contact plus room is more intensive than a standard hospital room cleaning. Staff use bleach solutions or hydrogen peroxide and peracetic acid products, both of which appear on the EPA’s official list of disinfectants proven to kill C. difficile spores. These products need adequate contact time on surfaces to work, so cleaning crews follow specific protocols to let the solution sit before wiping.
Many hospitals add a UV-light disinfection step after the manual clean. A UV device is placed in the empty room and run for a set period, using ultraviolet light to kill residual organisms on surfaces that may have been missed. This combination of chemical cleaning plus UV light significantly reduces the spore burden in the room before the next patient moves in. The isolation sign stays posted on the door until this full cleaning process is complete.