Hospital Sleeves Harbor Bacteria: Fleece Poses Highest Risk

Hospital attire, specifically the sleeves of healthcare workers, can harbor a surprising amount of bacteria, according to a recent prospective observational study. Researchers found that a significant majority of long sleeves tested carried bacterial growth, and a notable percentage contained potential pathogens.

The Prevalence of Bacteria on Sleeves

The study, which analyzed 280 samples collected from various inpatient hospital settings, revealed that 81% of healthcare workers’ long sleeves grew bacteria. More concerning, 21% of those sleeves contained at least one potential pathogen. These included alpha-hemolytic streptococci (found in 28 instances), Bacillus species (20 instances), Pantoea/Mixta species (eight instances), gram-negative bacilli (six instances), and Staphylococcus aureus (two instances).

Did You Know? Even freshly laundered garments become substantially contaminated with bacteria within just a few hours of wear.

Fabric Type Matters

The type of fabric also played a role in bacterial growth. Fleece sleeves were found to harbor the most bacteria, with over 41% containing at least one potential pathogen. This was significantly higher than non-fleece synthetic sleeves (32.8%) and cotton sleeves (24.1%) (P = .004).

Location Within the Hospital

The study also noted a difference based on hospital location. Bacterial growth was found on 69.6% of long sleeves sampled on non-intensive care units, compared to only 30.4% in the ICU (P = .038).

Expert Insight: The findings suggest that even with standard laundry practices, healthcare worker attire can quickly become a reservoir for bacteria, highlighting the need for strategies to minimize contamination.

Potential Next Steps

While the study did not demonstrate transmission of pathogens from sleeves to patients, nor a link between laundry practices and contamination levels, the findings raise questions about attire policies. Some hospitals may consider adopting or reinforcing “bare below the elbows” policies, similar to those used in the United Kingdom and endorsed by the Society for Healthcare Epidemiology of America. However, in the United States, attire policies are currently determined by individual hospital preferences. It is possible that further research will lead to more standardized recommendations.

Frequently Asked Questions

What types of bacteria were found on the sleeves?

The study identified several potential pathogens, including alpha-hemolytic streptococci, Bacillus species, Pantoea/Mixta species, gram-negative bacilli, and Staphylococcus aureus.

Did the study find any evidence of patients being infected from contaminated sleeves?

No, the study did not find evidence of transmission from health care workers’ sleeves to a patient.

What did the researchers suggest as a possible solution?

The researchers suggested that reducing contamination may be as simple as rolling up sleeves to allow for better hand hygiene.

Given these findings, how might hospitals balance infection control with healthcare worker comfort and preference in attire policies?