Epidemiology of burn infections

Data from single center studies and the Burn Care Quality Platform (BCQP) show worse outcomes in burn patients with infections. ^{Reference Barsun, Sen, Palmieri and Greenhalgh8–Reference Posluszny, Conrad, Halerz, Shankar and Gamelli16} Although these data show a consistent adverse association, there remains significant variability in reported infection rates due to inconsistencies in case definitions and surveillance approaches. ^{Reference Choong, Jurat and Sandeep6} Infections in burn patients can be challenging to diagnose due to patients’ altered physiological response, which may include elevated baseline body temperatures and inflammation, masking or mimicking signs of infection. ^{Reference Greenhalgh, Saffle and Holmes17} Even though research studies have examined the incidence of certain pathogens such as methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa, data on emerging pathogens and emerging patterns of resistance remain limited. ^{Reference Brandenburg, Weaver, Qian, You, Chen and Karna18,Reference Brandenburg, Weaver, Karna, You, Chen and Van Stryk19}

Although the BCQP captures valuable burn-related outcomes, it is not primarily focused on infection surveillance. To enable consistent, comparable, and generalizable data across institutions, future research should focus on establishing consensus-based definitions jointly developed by the ABA, Centers for Disease Control and Prevention (CDC), and infection prevention experts. This consensus would lay the foundation for a dedicated, standardized infection surveillance database that complements existing registries like BCQP and supports benchmarking, quality improvement, and research across burn units nationwide.

A major research gap exists in the standardized assessment of prevalence, incidence, and risk factors for burn infections including those caused by drug-resistant pathogens and in understanding their impact on healthcare outcomes.

Objective 1: Develop harmonized infection definitions that are standardized between CDC/National Health Safety Network (CDC/NHSN) and ABA to enable consistent surveillance of infections in burn patients across various settings such as intensive care, step-down units, and rehabilitation settings. This surveillance should include surgical wound infections, bloodstream infections, respiratory infections, and urinary tract infections.

Objective 2: design and implement a dedicated, standardized infection surveillance database for burn units, informed by consensus definitions. This database should include data on patient demographics, comorbidities, burn type, and severity, long-term outcomes such as quality of life, functional outcomes, and mortality, along with unit-level variables such as unit design, environmental controls, unit policies and procedures and staffing.

Objective 3: Establish real-time surveillance systems for infections and antimicrobial resistance trends in burn units to inform infection prevention strategies and guide empiric therapy.

Collaborative research between burn surgery, infectious diseases, and public health agencies will be essential to break down existing silos and develop a unified framework for infection surveillance and benchmarking in burn care.

Future work should focus on two areas for research under this priority area—microbiome of the burn wound and biofilms

Microbiome: A research gap exists in the understanding of the normal microbiome of the burn wound and the relationship of changes in microbiome with infections and wound healing in burn patients.

Objective 1: Study the microbiome changes caused by burn injuries, excisional surgeries, and topical treatments and the resultant effect on infections.

Objective 2: Investigate the relationship between microbiome composition of the burn wound, metabolomic profiles, and the development of invasive infections, including those associated with indwelling devices.

Biofilms: A research gap exists in the interplay of biofilms and development of infections and wound healing in burn patients.

Objective 1: Study the time line of emergence of most common pathogens such as Staphylococcus aureus, Pseudomonas aeruginosa, and Candida spp. in wound biofilms in burn patients.

Objective 2: Investigate the frequency and time line of emergence of various pathogens including multidrug-resistant organisms such as carbapenem-resistant Enterobacterales (CRE) and P. aeruginosa, Candida auris, molds such as Aspergillus, Rhizopus, and Fusarium spp. within biofilms in relation to antibiotic use.

Objective 3: Investigate the frequency and time line of emergence of the above pathogens within biofilms in relation to different types of wound care practices such as frequency, use of topical antimicrobials and various antiseptics, hydrotherapy practices such as water disinfection and use of point-of-care filters and unit design.

Objective 4: Investigate the relationship between biofilm formation and the development of invasive infections, including those associated with indwelling devices.

Objective 5: Investigate the resistance of biofilms to conventional treatments and explore the role of unconventional treatments such as phages and nanoparticles in treatment and prevention of infections in burn patients.

Wound healing

Healing of the protective skin barrier in burned patients is critical to prevent infections. Many surgical and medical treatments have been used to aid the healing process. More robust randomized control trials are needed to compare various surgical and medical treatments used in burn units.

Objective 1: Test wound healing treatments and devices in burn patients such as microbiocidal creams, cellular and/or tissue-based products for wounds, and negative pressure dressings. Randomized clinical trials that would enable comparison of different treatment methods are needed.

Objective 2: Develop guidance on best surgical approaches to promote wound healing, including timing and staging.

Infection prevention and control strategies

A large research gap exists with regards to infection prevention in burn units. Knowledge driven from other patient populations are generally applied to the burn units. However, the burn population is different, with very different risk factors including a heavy wound and environmental microbial bioburden in the setting of significant immunosuppression and loss of protective biologic barriers. Infection prevention and control strategies must account for these specific challenges including basic hand hygiene and isolation practices, environmental control measures, antimicrobial and diagnostic stewardship, and wound management.

Staff practices of hand hygiene and isolation precautions are paramount as the environment is considered to play a major role in infections in these patients. ^{Reference Palmieri29–Reference Carrougher31} These are supported by environmental control measures such as surface and equipment cleaning and disinfection, but also extend to unit/room design, air quality, and water quality. ^{Reference Hota, Hirji, Stockton, Lemieux, Dedier and Wolfaardt32,Reference Kolmos, Thuesen, Nielsen, Lohmann, Kristoffersen and Rosdahl33} However, literature is limited on air and water quality specific to burn units, mostly addressing outbreak situations. Due in part to heavy antimicrobial use in these patients, multidrug resistance is rampant. ^{Reference Nauriyal, Rai and Joshi34}

Prevention practices for device-related infections in burn units vary significantly, reflecting a lack of standardized guidelines tailored to this unique patient population. Strategies effective in other patient groups are often applied to burn patients, but their non-intact skin and limited anatomical access require adapted approaches. Variability in practices, such as intravenous and urinary catheter exchange protocols and bathing procedures, highlights the need for further research.

Studies need to be performed examining the effect of collaboration between burn surgeons and infectious diseases physicians to proactively pursue effective and safe treatment option as part of antimicrobial stewardship efforts. Diagnostic stewardship has the potential to further optimize treatment plans. This includes but is not limited to pathogen screening (eg, MRSA, CRE) and preventive treatment efforts (eg, decolonization) using appropriate and timely testing such as rapid diagnostic technologies to identify infectious complications. ^{Reference Stewart, Pandolfo and Jani35} Wound management techniques play an important role in preventing infections but the individual effect of those techniques on infections has not been well defined. ^{Reference Markiewicz-Gospodarek, Kozioł, Tobiasz, Baj, Radzikowska-Büchner and Przekora36,Reference Norman, Christie and Liu37}

Objective 1: Assess the effectiveness of infection prevention protocols including hand hygiene protocols, isolation precautions, use of personal protective equipment (PPE), respiratory hygiene, and other infection prevention measures in this specific population

Objective 2: Assess the effectiveness of standard and novel environmental cleaning, high level disinfection and sterilization protocols used for reusable devices in burn patients.

Objective 3: Evaluate the effectiveness of environmental control measures designed to reduce the environmental burden in burn units through unit design, and air purification, water filtration, and surface decontamination systems.

Objective 4: Investigate the variability in device-related infection prevention practices among burn units and identify evidence-based strategies to inform the development of standardized guidelines.

Objective 5: Evaluate the role of diagnostic and antibiotic stewardship programs in optimizing antimicrobial use among burn patients and to assess their impact on clinical outcomes, including the incidence of antimicrobial-resistant colonization and infections.

Objective 6: Study the appropriate use of laboratory testing to guide patient management, including treatment, to optimize clinical outcomes and limit the spread of antimicrobial resistance.

Objective 7: Study infection outcomes in burn patients managed through a collaborative management model of Burn Surgery and Infectious Diseases physicians.

Objective 8: Research existing practices for wound management, including different types of dressings, debridement techniques, topical antimicrobials, and surgical interventions including skin grafts and reconstructive surgeries.

Risk assessment models

Although risk assessment and risk prediction models for infections exist in general, literature is lacking for burn infections. ^{Reference Feng, Noren and Kulkarni38,Reference Liu, Liu and Jin39}

Understanding specific risk factors for infection in this specialized patient population will allow for more individualized patient prevention strategies. Additionally, current risk adjustment models to compare performance will need to include risk factors that are specifically applicable to this patient population such as total body surface area burn and the presence of inhalational injury which are not currently included in healthcare-associated infection models.

Objective 1: Develop and implement risk assessment frameworks to identify potential infection control vulnerabilities in burn care, utilizing tools such as failure modes and effects analyses (FMEA) for process evaluation, and risk matrices, decision trees, and bowtie models for patient-level risk assessment.

Objective 2: Develop and validate predictive models to estimate the likelihood of burn infections, incorporating clinical variables such as burn size, depth, comorbidities, and time to treatment.

Other promising areas for research

In addition to the aforementioned research topics, several innovative areas show promise for research. Specifically wound healing technologies, health service delivery and access to care, and appropriate use of diagnostic tests are all areas for further research. These include studying the effect of novel technologies such as bioactive dressings, skin substitutes, and growth factors on wound healing and incidence of infections. ^{Reference Markiewicz-Gospodarek, Kozioł, Tobiasz, Baj, Radzikowska-Büchner and Przekora36}

Another emerging area for research is the role of telemedicine for early detection of wound infections, treatment initiation and remote monitoring of patient recovery. This may help deliver timely care to burn patients in remote, underserved areas. Progress in the development and evaluation of rapid diagnostic tools such as PCR-based diagnostics or point-of-care microbiology tests for burn patients can guide early and targeted treatments improving patient outcomes. ^{Reference Markiewicz-Gospodarek, Kozioł, Tobiasz, Baj, Radzikowska-Büchner and Przekora36,Reference Mondor, Barnabe, Laguan and Malic40}

In addition, postacute care and outpatient management and rehabilitation is a promising area of study for burn patients. ^{Reference Sengul, Kirkland-Kyhn and Gul41} Stress and trauma experienced by burn patients, their caregivers and healthcare workers might affect infection risk and recovery. Psychological interventions to improve infection prevention outcomes might prove to be effective. Lastly, researching cost effective infection prevention strategies in low- and middle-income countries and resource-limited settings may be an opportunity to improve burn wound care on a global scale.