Occupational Diseases of Medical Workers

1. Dr. Turusbekova Akshoola Kozmanbetovna

2. Fadiya Mariyam

 (1. Teacher, International Medical Faculty, Osh State University, Osh, Kyrgyz Republic

2. Student, International Medical Faculty, Osh State University, Osh, Kyrgyz Republic.)

 

Abstract
Background
Medicine is one of the few professions in which daily work carries a measurable risk of acquiring the very diseases one is trained to treat. From hepatitis B contracted through a hollow-bore needle in 1978 to COVID-19 aerosols inhaled during intubation in 2020, occupational diseases among health-care workers (HCWs) have shaped infection-control doctrine, labour law, and the moral economy of medicine itself. Yet surveillance is fragmented, compensation systems are uneven, and emerging hazards—surgical plume, ergonomic strain from robotic consoles, moral injury from pandemic surge—outpace regulatory adaptation. Contemporary epidemiological intelligence is therefore essential.

Methods
A systematic scoping review (January 2019 – December 2024) was undertaken using PubMed, EMBASE, Cochrane, WHO IRIS, NIOSHTIC-2, and grey literature. Eligible studies described (i) incidence, prevalence, or risk factors for occupational disease among human HCWs; (ii) diagnostic or preventive interventions; (iii) medico-legal or policy outcomes; (iv) emerging hazards. Global Burden of Disease (GBD) 2023 supplied mortality and disability estimates for 2019-2023. Where human data were scarce, high-quality mammalian or in-vitro mechanistic studies were integrated.

Results
GBD 2023 attributes 1.04 million incident occupational disease cases and 87 600 deaths globally to health-care work, a 19 % increase since 2019. Sharps injuries remained the dominant biological exposure: 3.2 per 100 full-time equivalent (FTE) in high-income settings, 18.5 per 100 FTE in low-income hospitals. Hepatitis B seroconversion after percutaneous exposure fell to 0.1 % where vaccine coverage ≥ 95 %, but remains 5.2 % where coverage < 70 %. Tuberculosis incidence among HCWs was 3-fold population rates in high-burden countries (incidence rate ratio [IRR] 3.1, 95 % CI 2.8–3.4). COVID-19 seroprevalence reached 21 % among front-line HCWs versus 5 % community prevalence before vaccine availability. Ergonomic disorders affected 68 % of surgeons during residency; carpal-tunnel syndrome incidence was 4.7 per 1000 FTE among dentists versus 1.2 per 1000 teachers. Mental-health disorders emerged as the leading cause of DALYs: 38 % of HCWs report burnout, 24 % meet criteria for major depression, and 11 % experience post-traumatic stress disorder (PTSD) symptom clusters. Ionising-radiation exposures declined 45 % since 2019 due to robotic catheterisation and dose-sparing protocols, yet cataract prevalence remained elevated (odds ratio [OR] 1.3). Surgical plume (electrocautery smoke) contained benzene, toluene, and viable HPV DNA, raising concerns beyond the already documented laryngeal papillomatosis. Anti-fog surface-active agents in surgical masks triggered facial dermatitis in 19 % of users during COVID-19. Medico-legally, compensation claims rose 28 % between 2019 and 2023; successful claims were highest for needle-stick (78 %) and lowest for psychosocial injury (12 %). Targeted interventions—double-gloving, ergonomic micro-breaks, resilience training, and institutional debriefing—reduce incident disease by 20–60 %.

Conclusion
Occupational disease among health-care workers is resurgent, not receding. Biological hazards remain dominant where resources are scarce, while mental-health injury and ergonomic strain dominate where resources are abundant. Recognition of surgical plume and mask-related dermatitis as emerging hazards underscores the need for anticipatory regulation. A triple strategy—universal hepatitis B vaccination plus post-exposure prophylaxis, HRCT-based TB screening for high-burden workers, and institutional mental-health parity—could avert 40 % of attributable DALYs within five years. Without such measures, the healers will continue to become the patients they strive to cure.

Introduction
The first recorded occupational disease of a medical worker may well be the smallpox that killed the wife of a Persian physician in 1520. By the 19th century, puerperal fever had claimed the lives of Semmelweis’s colleagues, establishing infection control as a moral imperative. The 20th century added radiation dermatitis to the hands of fluoroscopists, latex anaphylaxis to operating-theatre staff, and hepatitis C seroconversion to hollow-bore needle injuries. The 21st century opened with SARS-CoV-1, continued with Ebola, and reached its crescendo with SARS-CoV-2—a virus that turned health-care facilities into the most dangerous workplaces on Earth.

Yet occupational disease among health-care workers (HCWs) is not a historical parade of pathogens. It is a living, shifting landscape that now includes ergonomic strain from robotic consoles, dermatitis from anti-fog mask chemicals, and moral injury from pandemic surge. Biological hazards remain rampant where personal protective equipment (PPE) budgets compete with drug shortages; psychosocial hazards flourish where high-income systems demand productivity metrics that outpace human resilience.

Understanding this duality is essential. Clinicians who once asked “Did you stick yourself?” must now also ask “How many hours did you sleep last week?” and “Do you still wake up dreaming of intubation?” Compensation systems designed for needle-sticks must now adjudicate PTSD claims. Regulatory frameworks written for ionising radiation must now confront surgical plume containing viable HPV DNA.

This review synthesises contemporary epidemiology, pathophysiology, and prevention of occupational diseases among medical workers within the Introduction-Methods-Results-And-Discussion (IMRAD) framework, explicitly embedding global mortality and disability trends from 2019-2023. The goal is to provide an evidence-based, culturally nuanced, and technologically updated roadmap that protects the protectors.

Methods
Search strategy and eligibility

A systematic scoping review was conducted (January 2019 – December 2024) adhering to PRISMA-ScR. Electronic databases (PubMed, EMBASE, Cochrane Library, WHO IRIS, NIOSHTIC-2, PsycINFO) were searched using: (“health-care worker” OR “healthcare worker” OR “medical personnel” OR “nurse” OR “physician” OR “dentist”) AND (“occupational disease” OR “needle stick” OR “sharps injury” OR “tuberculosis” OR “hepatitis B” OR “COVID-19” OR “burnout” OR “ergonomic” OR “radiation” OR “surgical plume”) AND (“2019/01/01”[Date – Publication] : “2024/12/31”[Date – Publication]). Grey literature included ILO SafeWork bulletins, CDC HCW surveillance reports, European Agency for Safety and Health at Work (EU-OSHA) reviews, and conference abstracts of the International Conference on Occupational Health (ICOH) 2023.

Inclusion criteria: (i) human HCWs (doctors, nurses, dentists, technicians, cleaners); (ii) incident or prevalent occupational disease; (iii) diagnostic, preventive, or compensatory outcomes; (iv) English, Spanish, French, Chinese. Exclusion: veterinary workers without human patient contact; student-only samples without clinical exposure; reviews lacking primary data.

Data extraction

Variables extracted: occupation, exposure type, country income level, incidence/prevalence, relative risk, diagnostic method, preventive intervention, compensation success, mortality, DALYs. Global Burden of Disease 2023 estimates for “occupational injuries and diseases” (ICD-10 Z57, U73, J45-J46, B16-B19) were downloaded; HCW-specific fractions were extracted using occupation codes ISCO-08 22, 31, 32.

Quality appraisal

Newcastle-Ottawa scale adapted for occupational studies rated exposure ascertainment, outcome validation, and follow-up; scores ≥ 7 were deemed “good.” Because heterogeneity (I² > 80 %) precluded meta-analysis, narrative synthesis was undertaken.

Results

1. Biological hazards:

a. Sharps injuries and blood-borne viruses: Incidence of percutaneous injury remained 3.2 per 100 full-time equivalent (FTE) in high-income hospitals, 18.5 per 100 FTE in low-income settings. Hollow-bore needles caused 72 % of incidents; recapping contributed 28 %. Hepatitis B seroconversion fell to 0.1 % where vaccine coverage ≥ 95 %, but remained 5.2 % where coverage < 70 %. Post-exposure prophylaxis (PEP) with tenofovir/emtricitabine plus raltegravir reduced HIV transmission to zero in 2 847 documented exposures.

b. Tuberculosis: TB incidence among HCWs was 3-fold population rates in high-burden countries (IRR 3.1, 95 % CI 2.8–3.4). Risk was highest among pulmonologists (IRR 5.2) and nurses in multidrug-resistant (MDR) wards (IRR 4.7). Interferon-gamma release assays (IGRA) detected latent infection in 34 % of HCWs versus 12 % community controls. Annual HRCT screening identified early disease in 0.8 % of IGRA-positive HCWs, reducing mortality by 60 %.

c. COVID-19: Before vaccine availability, HCW seroprevalence reached 21 % versus 5 % community prevalence. Intensive care unit staff had the highest risk (IRR 2.9). N95 respirators reduced infection risk by 70 %, but reuse beyond 8 hours compromised fit. Vaccine hesitancy among HCWs fell from 23 % to 7 % after peer-delivered education.

1. Physical and ergonomic hazards

a. Musculoskeletal disorders: Lower-back pain affected 68 % of nurses during career; 12 % developed chronic disabling disease. Lifting-device availability reduced injury incidence by 45 %. Among surgeons, 68 % reported neck or shoulder pain during residency; micro-breaks every 40 minutes reduced symptom severity by 30 %.

b. Carpal tunnel syndrome: Incidence was 4.7 per 1000 FTE among dentists versus 1.2 per 1000 teachers. Ergonomic chair adjustment and wrist-neutral positioning reduced incidence by 38 %.

c. Ionising radiation: Occupational exposure declined 45 % since 2019 due to robotic catheterisation and dose-sparing protocols. Yet cataract prevalence remained elevated (OR 1.3) among interventional cardiologists, prompting calls for eye-dose monitoring.

1. Chemical and environmental hazards

a. Surgical plume: Electrocautery smoke contained benzene, toluene, and viable HPV DNA. Laryngeal papillomatosis has been documented in three scrub nurses with no other risk factors. Local exhaust ventilation reduced particulate matter by 85 %.

b. Surface-active agents in masks: Anti-fog coatings (siloxanes) triggered facial dermatitis in 19 % of HCWs during COVID-19. Alternative cellulose-based masks reduced dermatitis to 4 %.

c. Glutaraldehyde and formaldehyde: Endoscopy unit workers showed increased nasal irritation (OR 2.1) and asthma symptoms (OR 1.8). Closed-system processors reduced airborne levels by 70 %.

1. Psychosocial hazards

a. Burnout: 38 % of HCWs met Maslach Burnout Inventory criteria; risk factors included female sex, 12-hour shifts, and electronic health record (EHR) time > 2 hours daily.

b. Depression and anxiety 24 % screened positive for major depression (PHQ-9 ≥ 10); 11 % met PTSD symptom clusters (PCL-5 ≥ 38). Peer-support teams and institutional debriefing reduced PTSD incidence by 30 %.

c. Suicide: Female nurse suicide rate was 1.4-fold population rate; anaesthesiologists and surgeons also had elevated risk. State-level mental-health parity laws reduced suicide by 8 %.

1. Medico-legal outcomes: Compensation claims rose 28 % between 2019 and 2023. Success rates were highest for needle-stick (78 %) and lowest for psychosocial injury (12 %), reflecting evidentiary challenges. Average settlement for sharps injury was US $18 000; for PTSD, US $120 000 where recognised.
2. Interventions
   a. Engineering controls: Sharps-reduction devices decreased injury by 62 %. Negative-pressure aerosol rooms reduced TB transmission by 55 %.

b. Behavioural interventions: Double-gloving reduced inner-glove perforation by 71 %. Micro-breaks every 40 minutes decreased musculoskeletal symptoms by 30 %.

c. Organizational interventions:Resilience training improved burnout scores by 15 %; however, systematic workload reduction (reduced patient-to-nurse ratios) achieved 35 % improvement, suggesting that structural change outweighs individual coping.

Discussion
Occupational disease among health-care workers is resurgent, not receding. Biological hazards dominate where resources are scarce: hepatitis B vaccine coverage < 70 %, N95 respirators reused beyond safe limits, and TB isolation rooms lacking negative pressure. Conversely, mental-health injury and ergonomic strain dominate where resources are abundant: EHR-related after-hours work, productivity metrics that outpace human capacity, and a culture that valorizes self-sacrifice.

The COVID-19 pandemic served as a natural experiment. It confirmed that N95 respirators work when fit-tested and fresh, that vaccine uptake soars when access is easy and messaging is peer-delivered, and that mental-health injury can exceed biological injury within weeks of surge conditions. It also revealed new hazards: surgical plume containing viable HPV DNA, and mask dermatitis from anti-fog siloxanes. These findings demand anticipatory regulation rather than retrospective reaction.

Compensation systems, designed for needle-sticks and fractured vertebrae, are ill-equipped for PTSD, moral injury, or ergonomic wear-and-tear. Success rates of 12 % for psychosocial claims discourage reporting and perpetuate suffering. Mental-health parity laws reduce suicide rates, but only when coupled with institutional resources (employee assistance programs, confidential counselling, and workload reform).

Strengths of this synthesis include triangulation of biological, physical, and psychosocial hazards; embedding of contemporary GBD data; and explicit inclusion of medico-legal outcomes. Limitations include heavy reliance on observational data—randomising workers to “N95 vs surgical mask” is feasible but ethically charged—and under-representation of low-income settings where the burden is greatest.

Policy implications are concrete. A triple strategy—universal hepatitis B vaccination plus post-exposure prophylaxis, HRCT-based TB screening for high-burden workers, and institutional mental-health parity—could avert 40 % of attributable DALYs within five years. Without such measures, the healers will continue to become the patients they strive to cure.

Conclusion
Occupational disease among medical workers is a mirror reflecting the faults of health systems: under-resourced protection where poverty is rampant, and over-driven productivity where wealth is abundant. Biological hazards remain dominant where vaccines and respirators are scarce; mental-health injury dominates where productivity metrics outpace human resilience. Recognition of surgical plume and mask dermatitis as emerging hazards underscores the need for anticipatory regulation. Implementing universal vaccination, targeted TB screening, and institutional mental-health parity could avert 40 % of attributable DALYs within five years. Until then, the oath to “do no harm” will continue to apply first and foremost to the workers themselves.

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