Health workers don’t feel secondary traumatic stress only in the crisis room, but in the hour after a patient’s traumatic account ends — indirect exposure can carry trauma-related stress into the evening.

You finish hearing a traumatic account, then notice the memory following you into the evening.

The research answer is clear in one respect: indirect trauma exposure can accompany secondary traumatic stress, often alongside burnout.

That finding does not create one universal rate. Studies measured nurses, therapists, emergency workers, social workers, and other helping professionals. Their numbers changed with the group, setting, sample, and measure.

This article uses research from its original journals and sources. Services Australia and the DSS sit outside this health question.

The useful answer comes from the measured psychology: STS can occur after repeated contact with other people’s trauma, and burnout remains a related condition with its own pattern.

What does secondary traumatic stress measure?

A real reaction may already be in mind when the reader arrives: a client’s account, a patient’s crisis, or a scene that keeps returning after work.

Secondary traumatic stress refers to trauma-related stress linked with indirect exposure. A person may hear, witness, or work closely with another person’s traumatic experience.

The research record includes therapists, nurses, emergency staff, social workers, advocates, foster carers, judges, and field interviewers. These roles differ, yet each involves contact with suffering or traumatic material.

Trauma researchers reported that fieldworkers’ experiences often mirrored symptoms seen among therapists who felt flooded. Their finding pointed to listening as a possible route to trauma by proxy.

That phrase describes a research observation. It does not prove that every difficult account causes STS. It also does not show that one symptom confirms a diagnosis.

Measures matter. A questionnaire score, a high-risk category, and a reported symptom can describe different levels of concern.

The clearest reading for this reader is simple: indirect exposure belongs in the explanation. The number needs its group and its measure beside it.

How common is secondary traumatic stress in health workers?

A check of a recent work experience may reveal that published rates look far apart.

Emergency nurses provide one clear example. A 2024 systematic review and meta-analysis reported a combined STS prevalence of 65%, with a 95% confidence interval of 58%–73%.

The same review reported significant variation between studies. That spread matters because the combined estimate does not describe every emergency nurse.

Earlier samples also found substantial levels. In one emergency department study, 75% of sampled emergency nurses reported at least one STS symptom during the last week.

A sample of 175 NICU nurses produced another useful marker. Scores for 49% of those nurses indicated moderate to severe STS.

In a study of health care professionals working with trauma victims, high-risk STS scores reached 43.3% among paramedics and 43.6% among nurses.

Those figures answer different questions. One reports combined prevalence across studies. Another counts a symptom during one week. Another uses a risk category.

For the reader, the pattern is stronger than any single rate.

STS appears often enough across several care settings to deserve attention, while the exact percentage depends on how researchers measured it.

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What are the main numbers across different roles?

The most useful comparison depends on the reader’s work setting. A therapist, nurse, advocate, or researcher meets trauma in a different form.

Among UK therapists working with adult trauma clients, 70% of scores indicated high risk of STS.

The majority of those therapists scored within the average range for compassion satisfaction and burnout.

Among critical care nurses in Iran, 96% showed high risk levels of STS, while 42% showed high risk levels of burnout.

Forensic nurses showed a different profile. In one prevalence sample, 73% had moderate to high STS, and 73% had moderate to high burnout.

North Korean refugee service providers reported STS in 51.3% of respondents. Within that group, 20.7% reported severe STS.

Health professionals in India also showed variation by role.

STS in varying severity appeared among 88.2% of doctors, 79.2 of nurses, and 58.6% of allied health care professionals.

These figures cannot form one ranking of professions. Each result comes from a particular sample and method.

A comparison can still clarify the reader’s question. The rates show that secondary traumatic stress is measurable across roles, while no single workplace number stands for everyone.

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Does burnout mean the same thing as secondary traumatic stress?

The reader may call the whole experience burnout because exhaustion feels familiar and the words often appear together.

A 2013 meta-analysis found a strong association between job burnout and STS among workers with indirect trauma exposure. The weighted correlation was r = .69.

That link shows that the conditions often rise together. It does not erase the difference between them.

Two longitudinal studies from the United States and Poland found that the highest correlation between one burnout item and one STS item was .43.

The studies reported 18.8% shared variance for those items. Their result supported the view that burnout and STS remain distinct concepts.

Burnout usually describes work-related strain, exhaustion, or reduced work connection. STS centers on trauma-related stress after indirect exposure.

The terms can overlap in one person. A worker may feel worn down by job demands and also experience trauma-linked reactions.

That distinction gives the reader a better way to read the numbers.

A high burnout result does not automatically identify STS, and an STS result does not explain every part of work distress.

The strongest conclusion comes from the studies together: related does not mean identical.

Here are the figures the rest of this piece leans on — each one quoted, each one receipted.

Which exposure factors show the clearest links?

The reader looking at a difficult caseload may wonder whether the amount and type of trauma contact changes the risk pattern.

A meta-analysis of therapeutic work found small significant effects for trauma caseload volume, caseload frequency, caseload ratio, and personal trauma history.

The reported correlations were r = .16 for volume, r = .12 for frequency, r = .19 for caseload ratio, and r = .19 for personal trauma history.

These effects were small. They point to links in the data, rather than a simple rule that predicts one person’s outcome.

Work conditions also appeared in the evidence. Among Italian police officers, STS had a positive association with work-family conflict in one model.

Among domestic violence advocates, shared power emerged as the only workplace variable that significantly predicted STS beyond individual factors.

During the COVID-19 pandemic, Italian health professionals working with COVID-19 patients showed higher levels of stress, burnout, secondary trauma, anxiety, and depression.

Personal history can matter in some samples. A 2024 systematic review reported personal trauma history rates from 19%–81% among mental health professionals, while STS ranged from 19% to 70%.

The reader should hold these ranges carefully. They describe variation across studies, not a personal forecast.

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What factors move with lower secondary traumatic stress?

The reader may be searching the numbers for something that helps explain why two people in similar roles report different experiences.

Several studies linked resilience, compassion satisfaction, purpose, self-compassion, or coping with lower STS or better professional outcomes.

In social workers, higher purpose in life predicted lower rates of vicarious trauma, STS, and burnout after researchers controlled for weekly work hours and years of experience.

A study of emergency medical services personnel found resilience significantly inversely related to STS and negative change in outlook.

Among therapists, higher compassion satisfaction and higher self-compassion contributed to a model explaining 27.3% of the variance in vicarious posttraumatic growth.

Among nurses in training, resilience correlated positively with mindfulness and compassion satisfaction. It correlated negatively with compassion fatigue.

Coping patterns also formed four related groups in one analysis: problem-focused, socially supported emotion-focused, avoidant, and passive coping.

Those categories describe patterns in responses. They do not prove that one coping choice causes STS to fall.

Workplace support appears in the research too. In a study of victim advocates, 83% reported that training was available as support, and 55% reported workplace support for conference attendance.

For the reader, the practical meaning stays measured. Personal resources and workplace conditions show links with STS, yet the studies do not support one guaranteed fix.

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What should you take from the STS numbers?

The reader who sees a familiar symptom needs a careful conclusion, especially after comparing several different rates.

First, STS can follow indirect contact with trauma. The evidence includes people who listen to, treat, support, or study those affected by traumatic events.

Second, the reported rates can be high. Emergency nurses, NICU nurses, therapists, critical care nurses, and other workers showed meaningful levels in separate samples.

Third, the rates do not travel unchanged from one group to another. A prevalence estimate, a high-risk score, and one reported symptom measure different things.

Fourth, burnout and STS often connect. Longitudinal evidence still supports keeping the concepts separate.

Fifth, exposure factors and protective factors both appear in the research. Caseload patterns, personal trauma history, resilience, purpose, social support, and workplace conditions all enter different models.

The page’s seven sections point to one answer. The numbers support STS as a real research measure across trauma-related work, with wide variation around each estimate.

If the reader has distress, repeated trauma memories, depression, or thoughts of suicide, a qualified mental health professional can assess the situation.

During immediate danger, contact your local emergency number or a crisis service available in your country.

A study result cannot diagnose one person. It can give that person better language for describing what happens after repeated contact with trauma.

This is general information about the mind, not therapy or a diagnosis. If things feel hard, please consult a professional. In a crisis, reach a free, confidential crisis hotline right away; findahelpline.com lists one for your country.