What a 14-Account BSC Learned About Curtain Contamination
A mid-sized BSC managing environmental services contracts across 14 acute-care accounts — ranging from a 120-bed community hospital in a mid-Atlantic suburb to a 340-bed regional medical center in the southeast — ran an informal auditing exercise in 2022 that none of them had budgeted for: environmental cultures on privacy curtains. The infection preventionists at three of their accounts were investigating MRSA cluster events and asked whether curtains could be contributing. The BSC's quality team agreed to provide samples.
What came back from the lab was not a surprise to anyone familiar with the literature, but it was a useful forcing function for program redesign. Curtains in general medical-surgical rooms were testing positive for MRSA at rates ranging from 40% to over 80%, depending on how many days had elapsed since the last change. The curtains had been changed on a quarterly schedule, the default at most of these accounts, inherited from predecessor service contracts. They were visibly clean. They were clinically compromised.
The Published Evidence Behind Curtain Contamination
The laboratory finding wasn't new. A 2012 study published in the American Journal of Infection Control (reviewed in the APIC Text) found that privacy curtains in medical-surgical units became contaminated with MRSA within 1 week of installation of a clean curtain. A 2022 follow-up study from a tertiary care hospital found VRE contamination on curtains within 3–5 days of a fresh change in a unit with VRE endemic pressure. The pattern across studies is consistent: the hems, the bottom 12 inches of the curtain, are consistently the most contaminated section, because healthcare workers and visitors touch them to pull curtains open and closed.
The CDC HICPAC guidelines do not specify a universal curtain change interval but recommend that facilities assess curtain change frequency based on their unit-specific organism surveillance data. The practical interpretation: no single interval is correct for all units. The appropriate change frequency depends on the unit's pathogen burden.
What Different Accounts Were Actually Doing
Across the 14 accounts in the BSC portfolio, the BSC quality team documented five different curtain change practices:
- Quarterly scheduled change, all units: The most common practice. Low cost, low administrative burden. Almost certainly inadequate for high-acuity units with MRSA or VRE endemic pressure based on the published evidence.
- On visible soiling only: Relied entirely on visual assessment. The premise, that contaminated curtains look contaminated, is not supported by the culture evidence above. Visually clean curtains were consistently positive for MRSA in the audits.
- At every patient discharge: Practiced at two accounts, both of which had experienced MRSA cluster investigations. Adds curtain change labor to every terminal clean; cost is real but bounded.
- Monthly change for ICU, quarterly for Med-Surg: A risk-stratified interval. Not evidence-based in the sense of deriving from facility-specific culture data, but directionally appropriate given the higher pathogen burden in ICU.
- On precaution placement or discontinuation, plus quarterly baseline: Triggered change on contact precaution initiation (new isolation patient) and on precaution discontinuation after terminal clean. The most targeted approach and the one most aligned with the pathogen transmission data.
What Worked: The Precaution-Triggered Protocol
The two accounts in the BSC portfolio that adopted the precaution-triggered protocol showed measurable improvement in curtain culture results and no meaningful increase in annual curtain replacement cost over the baseline quarterly schedule. The logic: curtains changed at precaution initiation and termination see the most turnover in high-acuity rooms, which are the rooms where contamination risk is highest. General med-surg rooms without active precautions see a quarterly baseline change, which may still be adequate given the lower organism burden.
The operational mechanism was simple. The bed management system already flagged precaution placements for EVS response. Adding a curtain change trigger to the same notification, "contact precaution placed: change curtain" and "contact precaution discontinued: terminal clean including curtain change", required no new technology, just a policy amendment and a training update for the EVS porters assigned to isolation response.
What Failed: The Visibility-Only Protocol
The three accounts that changed curtains only when visibly soiled generated the worst culture results in the audit. Porters and nurses applied a contamination threshold ("does it look dirty?") that is not clinically meaningful for organisms like MRSA and VRE, which produce no visible trace on fabric. Curtains at these accounts were being changed every 6–9 months on average. One unit produced curtain samples with MRSA and VRE present on 11 of 12 tested hems.
The lesson the BSC quality team documented: visibility is a meaningful trigger for linen and gown changes, where gross contamination is often present. It is not a meaningful trigger for curtains, where the contamination mechanism is hand-contact transfer rather than direct soiling.
The Cost Reality
Curtain changes are not free. A full patient room curtain (72-inch by 84-inch, with track, hem weights, and privacy panel) costs the hospital $45–$90 in linen processing and replacement amortization per change event. At a 300-bed hospital changing curtains on every terminal clean, approximately 30 changes per day at typical discharge volumes, the annual curtain program cost approaches $400,000–$800,000 in replacement and processing. That is not a realistic program for most facilities.
The precaution-triggered protocol combined with a quarterly baseline represents a middle path. Estimate roughly 8–12 curtain changes per 100 occupied beds per month under this protocol, compared to 30+ changes under every-discharge and 3–4 under quarterly-only. The annual cost lands between $50,000 and $180,000 for a 300-bed hospital depending on linen processing infrastructure and curtain replacement cycle. That is defensible relative to the baseline quarterly program and substantially more evidence-aligned.
The AHE practice guidance on curtain management provides additional data on disposable curtain programs, which some facilities have adopted to eliminate the linen processing cost at the expense of higher per-change material cost. Disposable curtains at $12–$25 each make economic sense only if the change frequency is high enough that the eliminated processing cost exceeds the per-unit premium.
What to Copy
Three practices from the BSC portfolio that the evidence supports:
- Precaution-triggered curtain change on both isolation initiation and terminal clean, overlaid on a quarterly baseline for non-precaution rooms.
- Hem-focused contamination awareness training for EVS staff, the bottom 12 inches gets the most hand contact and carries the highest organism burden.
- Annual culture auditing on a sample of curtains at different change intervals, to validate whether the chosen protocol is achieving acceptable contamination levels in your specific unit mix.
The Opora Frequency Matrix Builder can structure the triggered and baseline intervals across unit types. For the full isolation room terminal clean protocol that includes the curtain change step, see terminal clean procedures. The MRSA isolation-specific protocol is at MRSA isolation room decontamination. The healthcare cleaning hub has the full cluster. The ATP testing glossary covers the surface verification methods used alongside curtain culture auditing.
For additional context, consult the CDC HAI program.
For additional context, consult the BLS SOC 37-2011 OEWS.
By the Opora Editorial Team · Last updated: 2026