Atlas›Domain XVI · Historical, discredited & harmful›Guide 047
Guide XVI-047

Malaria fever therapy (Wagner-Jauregg)

Julius Wagner-Jauregg1917Vienna
A 28 · L 58 · M 1418 interventions in the Trinity explorer
Client cardCompare
[source: …] where a claim comes from[uncertain] not confirmed in a primary source[synthesis] the writer's reconstruction

1. Introduction

Version followed: the historical record of malaria fever therapy for general paralysis of the insane (GPI, late-stage neurosyphilis) as the Nobel Foundation, Daey Ouwens et al. (2017), Fischer (2022) and Gambino (2015) describe it, and the 1990s revivals for Lyme disease and HIV as the US Centers for Disease Control and Prevention (CDC) and news reports describe them.

Malaria fever therapy was the deliberate infection of people with neurosyphilis with malaria in order to produce high fevers, on the theory that the fevers would damage the syphilis organism. The Viennese psychiatrist Julius Wagner-Jauregg (1857-1940) began it in 1917 and received the 1927 Nobel Prize in Physiology or Medicine "for his discovery of the therapeutic value of malaria inoculation in the treatment of dementia paralytica" [source: Nobel Foundation facts page; Fischer 2022]. It became the standard treatment for GPI worldwide and was abandoned once penicillin became widely available in the mid-1940s [source: Daey Ouwens et al. 2017; Fischer 2022]. It is listed here for history and safety: it carried substantial mortality, was frequently given without meaningful consent, used non-syphilitic patients as parasite reservoirs, and was revived in the 1990s as an unproven "malariotherapy" for Lyme disease and HIV, which the CDC warned against [source: Fischer 2022; Gambino 2015 as summarised by Yale School of Medicine; CDC MMWR 1990, 1991]. It is not a treatment for any condition today, and this guide says what patients went through without giving any strain, route, fever count or drug used to end the infection.

For the psychotherapist, the "core idea of change" is the clinician's own: accurate historical literacy lets the therapist (a) recognise when a client's family history, medical mistrust or interest in "fever cures" connects to this history, (b) route any current physical-health question to medicine, and (c) carry the profession's lessons about consent, vulnerable patients and the authority of prizes into present practice [synthesis].

2. Framework

The framework below has two parts: the historical phases in outline (for literacy), and the phases of the psychotherapist's own work [synthesis]. Session numbers follow clinical need.

Historical phases (outline) [source: Fischer 2022; Daey Ouwens et al. 2017; Nobel Foundation; CDC MMWR 1990, 1991; Chou 2003]

  • 1917: Wagner-Jauregg begins malaria fever treatment of GPI in Vienna; he reports therapeutic success in 1921.
  • 1920-1923: adoption in Germany (1920), several European countries (1922), and the US, USSR, France and Denmark (1923).
  • 1927: Nobel Prize; the first awarded to a psychiatrist.
  • 1920s-1950s: tens of thousands of patients treated worldwide, including in state hospitals; historians document the use of non-syphilitic patients as reservoirs and racialised research settings (Gambino 2015; a historical study of a US Public Health Service laboratory at the South Carolina State Hospital, 1932-1952 [uncertain: not verified]). A Dutch hospital cohort (1924-1954) shows use across older patients and those with heart disease.
  • Mid-1940s onward: penicillin replaces fever therapy.
  • 1990s-2000s revivals: "malariotherapy" promoted for late-stage Lyme disease (patients referred to Mexico; self-induced infection in Texas) and for HIV (studies in China linked to the Heimlich Institute); the CDC states it is unproven and dangerous.

Phases of the psychotherapist's work [synthesis]

  1. Preparation and literacy. Goal: an accurate, attributed grasp of the history and its harms. Move on when the therapist can explain it plainly without either glorifying the Nobel or caricaturing the era.
  2. Recognition and assessment. Goal: notice how the history reaches this client (family records, medical mistrust, an online "fever cure", a current physical complaint). Move on once the connection and any medical or safety need are clear.
  3. Safety and medical routing. Goal: any current infection, neuropsychiatric change or plan to undergo induced infection is routed to licensed medical care without delay. Move on only when that routing is in place.
  4. Processing and repair. Goal: grief, shame, anger or mistrust connected to the history (own or family) is worked through; trust in care is rebuilt where harmed.
  5. Advocacy and follow-up. Goal: the client's (or the therapist's) wish to act, such as accessing records, commemoration, institutional naming discussions, research-ethics teaching, is supported; colleagues' or institutions' use of unproven infection therapies is reported through proper channels.

3. Guiding principles

[synthesis unless a source is given]

  • Teach the history, never the method. Discuss who, when, why and what harm, never how it was given; no strains, routes or methods in session or in training.
  • Attribute and date every claim. Say "historians report" or "the CDC stated in 1990"; the record has gaps and contested figures.
  • A Nobel Prize is not a safety certificate. Use the 1927 prize to show clients and trainees that prestige and evidence are different things [source: Fischer 2022 for the prize and later reputation].
  • No physical disease is treated here. Syphilis, Lyme disease and HIV belong to physicians; the therapist routes, never advises on medicines or treatments.
  • Consent and capacity are the central lesson. Patients with GPI often could not consent; critics accuse Wagner-Jauregg of experimenting on non-consenting patients [source: Fischer 2022]. Let this shape your own consent practice with cognitively impaired clients.
  • Name structural harm without moralising. Race, institutionalisation and poverty shaped who was used as a reservoir or research subject [source: Gambino 2015 as summarised]; state it factually.
  • Hold complexity about historical figures. Wagner-Jauregg's documented record includes the Nobel, support for sterilising people he deemed "genetically inferior", welcoming the 1938 annexation, and a rejected Nazi party membership request [source: Fischer 2022]; present it as sources state it, without verdicts beyond theirs.
  • Families carry this history quietly. Asylum deaths and syphilis carried stigma; expect secrecy, shame and fragmentary records.
  • Medical mistrust is often earned. Treat a client's suspicion of medicine as information, not resistance, while still routing to care.
  • Victims stay unnamed. Refer to patients by role, never by name, even when archives name them.
  • Never provide, supervise or refer to the practice or its revivals. This includes "fever" or "induced infection" clinics abroad.
  • Report, do not ignore. A colleague or institution promoting induced infection is a professional-conduct and public-health matter (see 4.15).

4. Intervention inventory

The interventions below are the psychotherapist's own work; steps not drawn from a cited source are marked [synthesis]. None of them involves giving or recommending the practice.

4.1 Building the clinician's own historical literacy

  • Purpose / when: before teaching, supervising or working with a client for whom this history matters.
  • Steps: (1) Read the attributed core facts: the 1917 start, the 1927 Nobel motivation, worldwide spread to the mid-1940s, the reported outcome and mortality figures, the use of reservoir patients, and the 1990s revivals [source: Nobel Foundation; Fischer 2022; Daey Ouwens et al. 2017; Gambino 2015; CDC MMWR 1990, 1991]. (2) Note which figures are contested or come from single studies. (3) Prepare a two-minute plain-language summary without method detail. (4) Note your own reactions (admiration for the prize, horror at the harm) so they do not drive the session.
  • Example language (illustrative): "Before penicillin, doctors in many countries deliberately gave patients with late-stage syphilis malaria to cause fevers. It won a Nobel Prize in 1927, it killed a significant share of patients, and it was often done without real consent."
  • Watch for: repeating mortality or cure figures as settled fact (they vary by source and setting); slipping into how it was done. Working: you can answer questions accurately and say "historians differ" where they do.

4.2 Recognising when the history is present in the room

  • Purpose / when: at intake and throughout, when a client mentions an ancestor who "died in the asylum", "general paralysis", "syphilis of the brain", "fever cure", or online "malariotherapy".
  • Steps: (1) Listen for these cues and for medical mistrust tied to past experimentation. (2) Ask an open question about what the client knows. (3) Clarify whether the issue is family history, a current health question, a current plan, or professional interest. (4) Choose the relevant procedure below.
  • Example language (illustrative): "You mentioned your great-grandfather was treated with a fever cure in a state hospital. What do you know about that, and what does it mean to you?"
  • Watch for: assuming every asylum ancestor received this treatment; records may say otherwise. Working: the client's actual question becomes clear.

4.3 Screening for current medical needs and routing to medicine

  • Purpose / when: whenever a client reports possible current syphilis exposure, new cognitive, personality or mood change with physical signs, or a Lyme or HIV diagnosis linked to interest in fever or infection cures. The GPI history is a reminder that psychiatric symptoms can have infectious causes [synthesis].
  • Steps: (1) Ask whether the client has had a recent medical assessment. (2) If not, recommend a physician or sexual-health service promptly; with consent, liaise with the client's doctor. (3) Do not suggest, comment on or compare medicines or treatments. (4) Record the referral and follow it up next session.
  • Example language (illustrative): "Changes like the ones you describe need a doctor to look at them, because some have physical causes that medicine can test for. Would you be willing to book that this week?"
  • Watch for: psychologising a possible organic presentation; offering medical opinions. Working: the client has seen a physician and medical questions sit with them.

4.4 Assessing and responding to a client drawn to "fever" or induced-infection cures

  • Purpose / when: a client is considering or researching "malariotherapy" or any deliberate infection for Lyme disease, HIV or another illness, including clinics abroad. The CDC states induced malaria for Lyme disease is unsupported by studies and dangerous [source: CDC MMWR 1990, 1991].
  • Steps: (1) Explore with curiosity what draws them (desperation, failed treatments, distrust, an online community). (2) Reflect the hope and the frustration. (3) Share, with permission, what the CDC reported: iatrogenic illness, possible death, infection with undetected bloodborne pathogens, and no supporting studies. (4) Encourage an urgent conversation with their own physician. (5) If a plan is imminent, treat it as a safety concern: increase contact, involve their doctor with consent, and assess wider risk. (6) Do not supply any information about obtaining or undergoing the practice.
  • Example language (illustrative): "It makes sense to look for anything that might help after so long feeling ill. The US public health agency looked at this and found serious risks and no studies showing it works. Could we bring this to your doctor together?"
  • Watch for: arguing, which may harden commitment; shame about having considered it. Working: the client discusses the option with a physician and postpones or drops the plan.

4.5 Working with a client harmed by an unproven infection therapy

  • Purpose / when: a client underwent induced infection (abroad or self-administered) and now has physical sequelae, shame, anger or loss of trust.
  • Steps: (1) Confirm medical follow-up is in place. (2) Assess mood, trauma symptoms and suicide risk (see 5.6). (3) Normalise the search for a cure without endorsing the practice. (4) Process the betrayal by the promoter and any self-blame. (5) Support the client's choices about complaints or reporting (see 4.15).
  • Example language (illustrative): "You trusted people who told you this would help, and you were very unwell when you made that choice. The responsibility sits with those who offered it."
  • Watch for: retraumatisation from detailed retelling; minimising physical symptoms. Working: reduced self-blame and continued engagement with medical care.

4.6 Family-history work with descendants

  • Purpose / when: a client has learnt that a parent, grandparent or great-grandparent had GPI, was in an asylum and may have received fever therapy.
  • Steps: (1) Explore what is known, how it was learnt, and family silences. (2) Offer accurate attributed context (4.1). (3) Distinguish fact, family story and speculation. (4) Explore impacts on the family across generations (secrecy, shame, early death, poverty). (5) Invite meaning-making: how the client wants to hold this ancestor.
  • Example language (illustrative): "Families often stopped talking about relatives who died in asylums, especially with syphilis involved. What did the silence in your family feel like?"
  • Watch for: the client equating syphilis with moral failing, or fearing they inherited it (it is an infection, not inherited in that way; route any health worry to a physician). Working: a more coherent, less shame-laden family narrative.

4.7 Supporting access to archival and hospital records

  • Purpose / when: the client wants to know what happened to an ancestor.
  • Steps: (1) Help the client identify the likely institution and period. (2) Encourage contact with the relevant archive or records office and learning their access rules. (3) Prepare emotionally: records may contain stigmatising language, clinical detail or nothing at all. (4) Plan how to read them (with support, in stages). (5) Debrief afterwards.
  • Example language (illustrative): "Records from that era can use language that is hard to read. Would it help to plan when and with whom you open them?"
  • Watch for: overwhelm on reading case notes; disappointment if records are missing. Working: the client approaches the records with a plan and integrates what they find.

4.8 Grief and commemoration work

  • Purpose / when: the client grieves an ancestor or feels a need to honour them.
  • Steps: (1) Validate grief across generations. (2) Explore forms of remembrance the client chooses (writing, visiting a grave or memorial, telling family). (3) Support without prescribing a ritual.
  • Example language (illustrative): "What would feel like a fitting way to remember her, knowing what you now know?"
  • Watch for: pressure from relatives who want the past left alone. Working: the client feels a sense of connection or completion.

4.9 Working with stigma and shame around syphilis

  • Purpose / when: shame about a sexually transmitted infection in the family, or the client's own diagnosis.
  • Steps: (1) Notice moralising language. (2) Offer a public-health framing: an infection that historically carried heavy stigma. (3) Explore the client's own beliefs about sexuality and illness. (4) For a current diagnosis, confirm medical care and partner-notification support through health services.
  • Example language (illustrative): "Syphilis was treated as a moral stain for a long time, which is part of why so many patients were hidden away. It is an infection; it says nothing about anyone's worth."
  • Watch for: sexual-health shame blocking medical care. Working: the client can speak about it without shame and keeps medical appointments.

4.10 Working with medical mistrust rooted in experimentation histories

  • Purpose / when: a client, often from a community historically used in research, distrusts doctors and cites past experiments. Historians document racial dimensions of malaria therapy, including the use of non-syphilitic patients as reservoirs (Gambino 2015) and a US Public Health Service malaria laboratory at a South Carolina state hospital, 1932-1952 [uncertain: not verified].
  • Steps: (1) Validate that the mistrust has historical grounds. (2) Explore the client's own experiences of care. (3) Separate past abuses from present safeguards (ethics review, consent rights) without dismissing current inequities. (4) Help the client identify what they need to feel safer with a doctor (an advocate present, written information, a second opinion). (5) Keep routing physical-health needs to medicine.
  • Example language (illustrative): "Your caution has real history behind it. What would need to be true for you to feel able to see a doctor about this?"
  • Watch for: colluding with avoidance of needed care; lecturing about trust. Working: the client engages with care on terms they can accept.

4.11 Applying the consent lesson in your own practice

  • Purpose / when: with clients whose capacity may be impaired (dementia, psychosis, intellectual disability, acute illness).
  • Steps: (1) Assess understanding of what therapy involves at each new step. (2) Use plain language and check back. (3) Involve legally authorised representatives as local law requires, while seeking the client's own assent. (4) Document consent and any capacity concerns. (5) Revisit consent when anything changes.
  • Example language (illustrative): "Before we try something new, I'd like to explain it and check it makes sense to you. You can say no or stop at any point."
  • Watch for: treating a guardian's agreement as the whole of consent. Working: the client can describe in their own words what you are doing together and that they may stop.

4.12 Research-ethics literacy for clinicians who research

  • Purpose / when: planning or joining any study, especially with vulnerable participants. The CDC's 1991 report stated that malariotherapy should be studied only with FDA and institutional review board approval and informed consent per the Declaration of Helsinki [source: CDC MMWR 1991]; a news report states the Heimlich researcher's review-board approval was terminated in 2000 [source: Chou 2003].
  • Steps: (1) Obtain ethics-committee approval before recruitment. (2) Build capacity assessment and voluntary consent into the protocol. (3) Avoid studies that expose participants to harm without credible benefit. (4) Raise concerns early if a project's design echoes these histories.
  • Example language (illustrative), to a research team: "Before we recruit, can we look at how we're checking that people with cognitive impairment genuinely understand and agree?"
  • Watch for: pressure to recruit fast; "compassionate" justifications for unproven exposure. Working: protocols with clear consent and oversight.

4.13 Teaching the history to trainees and colleagues

  • Purpose / when: training sessions, journal clubs, ethics teaching.
  • Steps: (1) Present the history with attributed sources, no method detail. (2) Use the Nobel to discuss how prestige and evidence differ. (3) Use reservoir patients and consent to discuss vulnerability. (4) Close with present-day lessons: medical routing of possible organic causes, consent, recognising revived unproven therapies.
  • Example language (illustrative): "This treatment won the field's highest prize. What does that tell us about how we judge treatments today?"
  • Watch for: presentism that ignores the lack of alternatives at the time, or hero narratives that ignore harm. Working: trainees hold both and can name the lessons.

4.14 Conversations about historical figures and institutional names

  • Purpose / when: a client, colleague or staff group is troubled that a clinic, street or award bears Wagner-Jauregg's name. In 2005 four historians produced an expert report for the Upper Austrian government on whether the namesake of the state neurological clinic should be regarded as historically compromised [source: Gedenkstätte Steinhof catalogue entry; its conclusions uncertain: not verified]. Fischer (2022) reports that Austrian streets and medical facilities still bear his name.
  • Steps: (1) Give the documented record, attributed (Nobel; eugenic views; the rejected party membership request) [source: Fischer 2022]. (2) Explore what the name evokes for the person. (3) Support them in deciding whether and how to raise it through institutional channels. (4) Avoid imposing your own verdict.
  • Example language (illustrative): "Historians describe a man who won a Nobel and also supported sterilising people he considered inferior. How does working in a building named after him sit with you?"
  • Watch for: the session becoming a political debate; staff distress unaddressed. Working: the person can act or let it rest, by their own choice.

4.15 Duties when a colleague or institution promotes or uses induced infection

  • Purpose / when: you learn that a colleague, clinic or institution recommends, provides or refers clients for malariotherapy or any deliberate infection.
  • Steps: (1) Do not participate, supervise or refer. (2) Where safe and appropriate, raise the concern directly with the colleague. (3) If it continues or harm is likely, report to the relevant licensing board or professional body, and to the institution's clinical governance [synthesis]. (4) Clinicians who suspect iatrogenic malaria should report it promptly to local and state health agencies, as the CDC asks [source: CDC MMWR 1990, 1991]; encourage the treating physician to do so. (5) Document your actions. (6) Consult the APA Ethics Code and your own body's code on reporting duties [synthesis].
  • Example language (illustrative): "I'm concerned about the referrals for induced infection. The CDC has warned against it, and I can't be part of it. I'd like us to stop, and I'll need to raise it if it continues."
  • Watch for: fear of conflict delaying action; breaching confidentiality beyond what reporting requires. Working: the practice stops and clients are protected.

4.16 Working with a client's historical or creative interest

  • Purpose / when: a client researching, writing or making art about the asylum era or this treatment, sometimes as a way of processing illness or family history.
  • Steps: (1) Explore the personal meaning of the project. (2) Point to reputable historical sources (museums, peer-reviewed history). (3) Watch for distress or over-identification with patients. (4) Support boundaries on how much harrowing material they consume.
  • Example language (illustrative): "What drew you to this story? I wonder what it touches in your own life."
  • Watch for: romanticising the "brave pioneer" or the suffering. Working: the project serves the client's wellbeing.

4.17 Supporting people with chronic illness facing cure marketing

  • Purpose / when: clients with HIV, persistent symptoms attributed to Lyme disease, or other chronic conditions who are targeted by unproven "fever" or infection-based cures online.
  • Steps: (1) Validate the burden of chronic illness and medical frustration. (2) Build critical-appraisal habits together: who profits, what evidence, what do public-health bodies say. (3) Encourage bringing any proposed treatment to their physician. (4) Address isolation by exploring reputable patient support. (5) Monitor mood and hopelessness.
  • Example language (illustrative): "When a group online is certain a cure exists, it can feel like hope. Could we go through what they claim and what your doctor would want to know?"
  • Watch for: feeling dismissed, leading to dropout; hopelessness. Working: the client is more skilled at evaluating claims and stays in medical care.

4.18 Reflective practice on the profession's history

  • Purpose / when: ongoing, especially in supervision.
  • Steps: (1) Reflect on how a treatment can be standard, prize-winning and harmful at once. (2) Ask which current practices might later look similar. (3) Commit to evidence, consent and humility in your own work. (4) Bring discomfort about the profession's past to supervision rather than to clients.
  • Example language (illustrative), in supervision: "I notice I want to defend the field when clients raise this history. I'd like to look at that."
  • Watch for: defensiveness or excessive guilt. Working: you can discuss this history with clients calmly and honestly.

5. Handling problems

All guidance here is [synthesis] unless a source is named.

  • 5.1 The client asks how it was done. Explain that you discuss the history and its harms, not methods, because the practice was dangerous and is still promoted online. Redirect to what they want to understand (why doctors believed in it, what happened to patients).
  • 5.2 The client is set on an induced-infection cure. Avoid argument; return to their goals and fears (4.4). Share the CDC's statements once, clearly. Ask permission to involve their physician. If they proceed, keep the alliance, keep encouraging medical oversight, and watch for medical emergency; advise urgent medical help for fever or illness after any such exposure.
  • 5.3 "It won a Nobel, so it must have worked." Acknowledge that historians and the Dutch cohort study report longer survival for some treated patients at a time without alternatives [source: Daey Ouwens et al. 2017], and that about 15% died in Fischer's summary [source: Fischer 2022]; distinguish "better than nothing in 1925" from "safe or useful today".
  • 5.4 Overwhelm when reading family records or history. Slow down; ground in the present; read in stages with support (4.7). Stop if distress escalates and return to stabilisation.
  • 5.5 Shame, secrecy or conflict within the family. Work with the client's own position; avoid pressuring disclosure to relatives; explore safe ways to share if they wish.
  • 5.6 Hopelessness or suicidal thoughts. Chronic illness, failed cures or harm from unproven treatment can bring despair. Assess suicide risk directly using your service's standard approach; make a safety plan; if risk is present, involve crisis services. Crisis resources: 988 Suicide and Crisis Lifeline (US); Samaritans 116 123 (UK and Ireland). Follow safe-messaging principles: no method details, no glamorising.
  • 5.7 Mistrust extends to you. Name it, invite feedback, and be transparent about your role and limits. Treat ruptures as information and repair openly.
  • 5.8 Client wants you to endorse their anger at the profession or a figure. Validate feelings; give the documented record; avoid adding verdicts beyond what sources state.
  • 5.9 Your own discomfort or defensiveness. Take it to supervision (4.18) rather than resolving it in session.
  • 5.10 A colleague dismisses your concern about induced-infection referrals. Escalate through governance and the professional body (4.15); keep records; seek ethics consultation.
  • 5.11 Physical symptoms appear during therapy. Route promptly to medicine (4.3); never interpret new neurological or cognitive changes as purely psychological without medical assessment.
  • 5.12 Non-attendance after you raise risks. Reach out once, non-judgementally, leaving the door open and restating that you can talk about anything they choose.

Harm account

What was actually done

From 1917, at the Vienna university psychiatric clinic, Julius Wagner-Jauregg deliberately infected patients who had general paralysis of the insane (late-stage neurosyphilis) with malaria, at first using blood from a soldier who had the disease, so that the resulting fevers would act against the syphilis infection; patients went through the expected bouts of high fever and were then treated to clear the malaria [source: Fischer 2022]. He reported success in 1921 and received the 1927 Nobel Prize [source: Nobel Foundation; Fischer 2022; Daey Ouwens et al. 2017]. The treatment spread to Germany (1920), several European countries (1922), and the US, USSR, France and Denmark (1923), and tens of thousands of patients were treated worldwide until penicillin became widely available in the mid-1940s [source: Fischer 2022]. A Dutch hospital cohort shows it given to 43 of 105 GPI patients admitted from 1924 to 1954, including patients up to the age of 70 and those with syphilitic heart disease; the infection was passed from patient to patient in infected blood [source: Daey Ouwens et al. 2017]. Historians report that physicians also infected non-syphilitic patients with malaria to keep the parasite available for treating others, and examine the racial dimensions of this practice [source: Gambino 2015, as summarised by Yale School of Medicine]. Historians of California state hospitals have studied malaria treatment among the somatic treatments of the period [source: Braslow, Mental Ills and Bodily Cures, as described on the Psychiatric Services review page]. Critics accuse Wagner-Jauregg of experimenting on patients who had not consented [source: Fischer 2022]. In 1990 the CDC reported imported malaria in two of five people with late-stage Lyme disease whom a New Jersey physician had referred to providers in Mexico for induced malaria, and in 1991 a case of self-induced malaria for Lyme disease in Texas [source: CDC MMWR 1990, 1991]. In the early 1990s Henry Heimlich proposed malariotherapy for HIV; a 2003 Daily Bruin report states the Heimlich Institute conducted such research on HIV patients in China, that its review-board approval had been terminated in 2000, and that UCLA was examining two researchers' possible involvement; KFF Health News briefings in 2003 reported UCLA reopening that investigation and Heimlich announcing plans to test it in several African countries [source: Chou 2003; KFF Health News 2003]. Outcomes of the UCLA investigation are [uncertain: not verified].

How it caused harm

  • Death and serious illness: Fischer's summary reports that about 15% of treated patients died, about half recovered enough to resume normal activities, and about 20% partly improved [source: Fischer 2022]; Daey Ouwens et al. report mortality in their cohort matching worldwide findings [source: Daey Ouwens et al. 2017]. Figures vary by setting [uncertain: figures differ between studies].
  • Absence of consent: many patients had severe cognitive impairment and were institutionalised; critics accuse Wagner-Jauregg of experimenting without consent [source: Fischer 2022].
  • Exploitation of non-syphilitic and racialised patients used as parasite reservoirs or research subjects [source: Gambino 2015 as summarised].
  • Revivals: the CDC states induced malaria causes iatrogenic illness, can kill through malaria complications or undetected bloodborne co-infection, carries transfusion-reaction and local-transmission risks, and has no supporting controlled studies for Lyme disease [source: CDC MMWR 1990, 1991]. In 1993 the CDC warned that malaria infection in people with HIV "cannot be justified" [source: Chou 2003, quoting the CDC; uncertain: original statement not verified].
  • Lasting effects: family stigma, secrecy and medical mistrust among communities used in research [synthesis].

Recognising it today

  • Online or clinic promotion of "malariotherapy", "fever therapy" or any deliberate infection as a cure for Lyme disease, HIV, cancer or other illness; offers of treatment abroad; claims that a Nobel Prize proves it works [source: CDC MMWR 1990, 1991; Chou 2003; synthesis].
  • A client planning to travel for, or obtain, infected blood or an induced infection [synthesis].
  • In family histories: ancestors with "general paralysis", "paresis" or "fever treatment" in asylum records from the 1920s to 1950s [synthesis].
  • Medical mistrust tied to experimentation histories [synthesis].
  • Institutions and streets named after Wagner-Jauregg, prompting staff or public concern [source: Fischer 2022].

What to do instead and how to help those harmed

  • Supported care: neurosyphilis, Lyme disease and HIV are assessed and treated by licensed physicians under current medical guidelines; penicillin replaced fever therapy for syphilis from the mid-1940s [source: Fischer 2022]. The therapist routes clients to medical care and never advises on medicines.
  • Reporting: clinicians should report suspected iatrogenic or self-induced malaria promptly to local and state health departments, as the CDC asks [source: CDC MMWR 1990, 1991]; report professionals who promote it to licensing boards and professional bodies [synthesis].
  • Research safeguards: any research must have regulatory and ethics-committee approval and informed consent per the Declaration of Helsinki [source: CDC MMWR 1991].
  • Survivors and families: support people harmed by revived induced-infection treatment (4.5), descendants of patients (4.6-4.9), and communities with experimentation histories (4.10).
  • Crisis support: 988 (US); Samaritans 116 123 (UK and Ireland).

Sources

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