Dr. med. Sergio Dani

Dr. med. Sergio Dani

General Medicine  ·  Zürich, Switzerland
Appeals rejected, proceedings ongoing
Case Report — Documentation

Type of persecution

  • State criminal prosecution
  • Limited prohibition from practising
  • Termination / Dismissal
  • Disciplinary proceedings (Medical Chamber)
  • Public discreditation

Accusation

  • Issuance of false health certificates
  • Official accusation: That I had issued three mask / SARS-CoV-2 PCR testing / COVID-19 vaccination exemption “convenience” certificates.
  • Official accusation: That I had “not cooperated”
  • Official accusation: That I had displayed “criminal intent”
  • Without a prior oral hearing, the Zurich Health Directorate revoked the medical practice licence on 18 October 2024; the suspensive effect was simultaneously withdrawn. The justification cited the issuance of mask and vaccination exemptions for the three named patients during the COVID-19 pandemic. The Directorate alleged a case of multiple and “serious violations of professional medical duties, namely the duty of careful and conscientious professional practice within the meaning of Art. 40 para. 1 lit. a MedBG”. The Zurich Health Directorate and the Office of Public Health Zürich justified their actions with their own interpretations, claiming that the physician had allegedly not cooperated in the investigation and that they had lost confidence in him.

What actually happened?

  • I personally examined all patients both clinically and through laboratory testing and issued the certificates on the basis of comprehensible medical findings (including neurodermatitis, asthma, atopy, anxiety disorders, idiosyncrasies, immune status).
  • The certificates issued correspond to my medical conviction, the current state of scientific evidence, and the ethical principles of the Declaration of Geneva.
  • I only forwarded the patients’ medical records to the Zurich Health Directorate after the patients had given me written permission to disclose their confidential medical data.
— Dr. med. Sergio Dani

Current Status

  • All appeals were rejected by the lower instances (Zurich Health Directorate, Office of Public Health, Administrative Court)
  • Appeal accepted by the Federal Supreme Court in Lausanne on 5 February 2026, case pending there since
  • State liability claim filed with the Zurich Finance Directorate (debts amounting to CHF 505,000 plus satisfaction totalling CHF 3 million): currently suspended
Impact — Documentation

Professional impact

  • The practice had to be taken over in early 2025, then closed at the end of 2025. No income.
  • Loss of all health insurance accreditations.
  • Nov. 2024 – Jul. 2025: Ongoing fixed costs of the practice and loss of the practice
  • January 2025: Employment of the physician as an assistant doctor with low remuneration.
  • Voluntary resignation of experienced staff, overburdening of the reduced practice team and the practice director, termination of Dr. Dani as of 30 June 2025.
  • Termination of the new assistant position, followed by resumption of a 50% assistant position, voluntary termination of the employment contract for financial reasons.
  • To secure his livelihood and continue his fight to protect his reputation and family, the physician was forced to accept a 50% position as a general practitioner at the German-Swiss border.
  • The physician did not voluntarily give up medical practice in Switzerland but is factually and legally prevented from exercising it due to the contested decision: As a result of the revocation of the medical practice licence, the physician was forced to take up medical work outside Switzerland to secure his economic existence and that of his family. This activity does not constitute an abandonment of the medical profession nor a self-inflicted interruption of causation, but rather a forced alternative imposed by state action. The compulsory employment in Germany confirms the economic damage. The founding of the company (Pairomics Inc.) also demonstrates the physician’s efforts to mitigate the consequences, not a withdrawal. Due to the disputed and ongoing unlawful revocation of his medical practice licence, he is factually prevented from practising his profession in Switzerland, causing him lasting financial and reputational damage.
  • Despite the adjustment measures initiated by the physician, reputational and trust damage, health consequences, private, financial and especially family consequences with severe impairment of professional activities continue. The licence revocation has caused significant and lasting reputational damage beyond the immediate loss of income: de facto exclusion from the Swiss healthcare system, lasting impairment of professional credibility, and obstruction of national and international professional activities.

Financial impact

  • Loss of the physician’s practice income (approx. CHF 15,000 per month)
  • Recurring legal and attorney fees
  • Attorney and court costs to date approx. CHF 60,000
  • Savings exhausted, mountain of debt
  • Patient decline due to reputational damage
  • Loss of a frozen bull semen collection in Brazil due to arrears in maintenance fees
  • Loss of donor contributions to the Acangau Foundation in Brazil, resulting in impairment of, among others, two important civil lawsuits in the field of nature conservation, as well as non-payment of various fee invoices and expenses
  • Non-payment of old debts
  • Current total indebtedness (as of January 2026): approx. CHF 500,000. The physician is registered with the Zürich debt counselling service.

Personal impact

  • Sleep disorders, depressive episodes. Social withdrawal following negative media coverage. Marital crisis
  • Emigration
  • Hospitalisations of the physician due to stress-related symptoms
  • Insomnia and depression
  • Body weight loss of approx. 10 kg since October 2024
  • 2024: Marital breakdown with (still) wife, also affected: minor daughters
  • 2024: Termination of the school contract for the two daughters
  • 2025: Termination of a private car leasing contract
  • 2025: Termination of the rental contract for the family house
  • 2025: Termination of the rental contract for the apartment

Collegial reactions

  • Individual colleagues have shown solidarity. However, the majority distanced themselves, including long-standing practice partners.
  • Many of the appellant’s patients also filed appeals against the above-mentioned ruling with the Administrative Court. All appeals were summarily rejected on formal procedural grounds.

Press reactions

  • On 27 March 2025, the Tages-Anzeiger published a report with the headline “General practitioner loses his practice licence over three Covid certificates”, written by Catherine Boss. The comparison drawn by the journalist suggests a possible contrast in how comparable cases are handled and raises a legitimate question about regulatory coherence. The article states: “In the case of Sergio Dani, the Zurich Health Directorate took a hard line: he had issued ‘convenience certificates’. A cosmetic surgeon, on the other hand, was treated leniently for a long time, despite serious misconduct.” Overall, this comparison reads less as conclusive evidence of state overreach and more as an invitation to a critical examination of the proportionality of the imposed sanctions. (https://www.tagesanzeiger.ch/hausarzt-verliert-seine-praxisbewilligung-wegen-corona-attesten-589250103218)
  • On 8 April 2025, the cardiologist colleague Caimi produced a critical video in which he classified the measure taken by the Zurich Health Directorate as disproportionate (CaimiReport, 8 April 2025, https://youtu.be/8EN_44q-JPY)

Outlook

  • Despite everything, I would act the same way again. My patients had the right to an individual medical assessment, and I had the duty to provide it.
  • I hope that this documentation contributes to informing the public about what has happened to physicians in this country – and that something like this does not happen again.

Chronology

Juli 2019:
The exceptionally highly qualified physician, scientist and entrepreneur had been running a thriving general practice in Zürich since July 2019 with approx. 2,000 satisfied regular patients. The practice participates in the GP-centred care model of several health insurance companies.
2020 – 2022:
During the COVID-19 pandemic from 2020 onwards, the physician successfully treated hundreds of patients with a SARS-CoV-2 infection. None of his patients had to be hospitalised due to COVID-19, and none died from the consequences of this viral infection.
During this period, the physician actively participated in medical and scientific education about the lack of medical and scientific evidence and recommendations for public health measures such as the mandatory use of face masks, toxic spike protein mRNA lipofections (so-called «COVID-19» vaccination), PCR tests and lockdowns.
The appellant belongs to a group of physicians practising in Switzerland who fought against excessive, non-evidence-based measures and even founded and supported an association for this purpose: https://www.aletheia-scimed.ch/de/
He also publicly pointed out some harmful effects of the so-called COVID-19 measures on certain patients. In these discussions, he clearly expressed his criticism of the exaggerations, ineffectiveness and risks of such measures for some patients, as well as the disregard of scientific evidence, the interference of certain government authorities in the doctor-patient relationship, and the disregard of physicians’ therapeutic freedom and patients’ wishes.
Oktober 2020:
In October 2020, the physician criticised the officially presented coronavirus case numbers for the Canton of Zürich at a physicians’ panel in the city of Zürich. The presentation showed a rising straight line on a logarithmic scale over the entire observation period. According to the cantonal physician, this numerical dynamic did not represent exponential growth. The case number dynamics commented on by the cantonal physician were said to be an expression of the efficiency of cantonal control measures, which had allegedly prevented exponential growth of cases. The appellant pointed out that a straight line on a logarithmic scale represents exponential growth, which is typical of a viral epidemic, calling into question both the effectiveness of the cantonal measures and the scientific competence of the cantonal physician. This statement by the appellant triggered an outraged reaction from the president of the Zurich Medical Society (AGZ), Mr Josef Widler, who was present, and the cantonal physician remained silent.
This means an important background is missing that triggered the arbitrary proceedings against the physician, namely that during a lecture a personal conflict arose between cantonal physician Meier and the physician, which later led to the opening of proceedings, which in turn later led to the revocation of the medical practice licence – a manoeuvre to be understood as somewhere between official arbitrariness and defamation.
Okt. 20 – Nov. 21:
Between October 2020 and November 2021, three patient complaints were received by the Cantonal Medical Service, then the supervisory authority over physicians, against the physician for non-compliance with the protective and hygiene measures against COVID-19 in the medical practice, to which the physician responded in each case. This case was satisfactorily resolved through the physician’s detailed explanations and closed by the Health Directorate of Zürich without any sanctions against the physician.
23.01.2021:
On 23.01.2021, an article appeared in the Neue Zürcher Zeitung with the title “Mein Arzt hat gesagt” (“My doctor said”), which anonymously criticised the physician for his explanations: “(…) What do we learn from this story? My colleague might have been better off addressing his letter to the health authorities. They are unlikely to be indifferent when physicians torpedo the national vaccination strategy with unprofessional behaviour.”
Juni 2021:
At the beginning of June 2021, the physician received a threat of criminal charges from the Health Directorate of Zürich. This concerned a report by unknown persons alleging non-compliance with certain COVID-19 measures such as wearing face masks and COVID-19 vaccination. This despite the fact that the physician had already explained in detail in 2020, in response to a similar complaint, that he was correctly complying with the COVID-19 measures and that he and an assistant had a face mask exemption. The aforementioned NZZ article was expressly used against the physician in the complaint.
Okt. – Dez. 2021:
Between October 2021 and December 2021, the physician issued three medical certificates exempting from mask wearing and/or the so-called COVID-19 vaccination (SARS-CoV-2 spike protein mRNA lipofection) on health grounds for two adults and one minor patient respectively. For all three patients, medical histories, laboratory and specialist diagnoses were available that provided medically comprehensible explanations for the exemptions:
. Young adult patient «M. H.»: mask intolerance due to neurodermatitis – also called atopic eczema;
. Middle-aged adult female patient «B. V.»: mask intolerance as well as contraindication for SARS-CoV-2 spike protein mRNA lipofection (so-called «COVID-19 vaccination») due to increased risk of a COVID-19 post-vaccination syndrome in the patient with pre-existing metabolic syndrome, including obesity, insulin resistance and cardiovascular diseases;
. Minor female patient «V. C.»: mask intolerance due to severe childhood bronchial asthma with polyglobulia as an expression of breathing difficulty.
No «convenience certificates» and no concrete endangerment of patients (on the contrary: the patients were correctly treated and protected from risks and side effects):
. Face mask exemptions on medical grounds are globally recognised, standard medical measures. A COVID-19 vaccination exemption (SARS-CoV-2 spike protein mRNA lipofection) is justified as described above.
The issue of forgoing highly sensitive SARS-CoV-2 tests on patients, such as the PCR test with a high risk of false-positive results due to carry-over contamination of DNA, and the associated disadvantage to affected patients, has been known for a long time and is widely discussed, and the physician, as a Doctor of Medicine (1994), Privatdozent in Genetics (2000), first author of various peer-reviewed original scientific publications and founder of companies in the field of molecular genetics, has demonstrated “hands on” medical expertise in this field.
This eliminates any justified suspicion of issuing «convenience certificates» or «convenience exemptions» or of endangering public health. On the contrary: the patients were correctly treated and protected from risks and side effects.
The employers of the two above-mentioned adult patients and the school principal of the above-mentioned minor patient filed complaints against the said exemptions with the Health Directorate of Zürich.
2022:
In 2022, the Health Directorate of Zürich / the Office of Public Health of Zürich opened supervisory proceedings. Since 2022, there has been an intensive written exchange between the physician and the Health Directorate with the aim of clarifying the facts.
18.07.2023:
The physician submitted the requested patient files – initially on 18.07.2023 with data protection-compliant redactions – (whereby he redacted personal data of the patients from the period after the issuance of the certificate; for the period up to and including the date of issuance of the certificate, the patient files were submitted completely and unredacted).
After obtaining patient consent, further information supplementing the files already submitted with the lawyer’s letter of 18.07.2023 was submitted unredacted with the lawyer’s registered letter of 12.08.2024.
18.10.2024:
Without a prior oral hearing, the Health Directorate revoked the medical practice licence on 18.10.2024; at the same time, the suspensive effect was withdrawn. This was justified by the issuance of mask and vaccination exemptions for the three named patients during the past COVID-19 pandemic. In its supervisory ruling of 18.10.2024, the Office of Public Health dismissed the physician’s arguments. Rather, it alleged a case of multiple and “serious violation of professional medical duties, respectively the duty to practise the profession carefully and conscientiously”. The Health Directorate justified its action with its own interpretations that the physician had allegedly not cooperated in the investigation and that it had lost trust in him.
The revocation of the medical practice licence was critically commented upon publicly and in various legal circles, including with reference to disproportionate administrative practice and the absence of judicial review.
Seit 2022:
Immediate consequences of the ongoing medical practice licence revocation proceedings:
. since 2021: chronic psychological burden on the physician caused by the Health Directorate,
. 2024: blocking of the physician’s ZSR number (concordat number),
. revenue/fee collapse,
. indebtedness of the medical practice and the physician,
. loss or suspension of all insurance coverage,
. 2025: termination of the practice lease,
. 2025: termination of insurances,
. 2025: termination of the contract with Swisscom Health (CuraMed/CuraBill),
. 2025: termination of the contract with Labor Analytica,
. 2025: termination of a practice car lease
Seit 2024:
Various appeals were filed by the physician against the above-mentioned ruling, which were systematically rejected.
09.12.2024:
In its statement on the physician’s application to restore the suspensive effect, the Office of Public Health of Zürich stated:
»This reveals, among other things, the criminal energy that the appellant brings and displays in the exercise of his profession« (page 4/6).
“This also speaks for the particular criminal energy of the appellant and for the fact that effective supervision cannot be assumed in the future either” (page 5/6).
08.01.2025:
The criminal complaint filed by the physician against four officials of the Health Directorate and two officials of the Office of Public Health for arbitrariness and abuse of power was accepted and is currently being processed by the Public Prosecutor’s Office II.
12.03.2025:
The criminal complaint filed by the Office of Public Health on 15.01.2025 against the physician on suspicion of violation of professional secrecy, after he had published various letters and statements in connection with the pending proceedings concerning the licence revocation on the website of his practice, inadequately redacting the names of patients and their employers, was not accepted by the Zürich Public Prosecutor’s Office: “For the offence of violation of professional secrecy to apply, intent is required from a subjective perspective. Such intent is in this case to be denied from the outset. The accused made every effort to redact the names and these are, when the documents are viewed online – where they were, it should be noted, also placed – not legible. The accused cannot be blamed and in no way sufficiently charged with having knowingly accepted that the names would become decipherable if one were to print out the documents and hold them against the light. Rather, what we have here – if anything – is negligence on the part of the accused, which is not punishable.”
26.06.2025:
Judgment of the Administrative Court of Zürich: The court classified the three exemptions as a “systematic approach” and derived from this a permanent lack of trustworthiness; milder measures were deemed “unsuitable due to lack of insight”. The Administrative Court upheld the decision of the Health Directorate.
31.07.2025:
Appeal against the judgment of the Administrative Court filed with the Federal Supreme Court in Lausanne. The Federal Supreme Court dismissed the appeal insofar as it could be considered.
21.10.2025:
State liability and satisfaction claim against the Canton of Zürich filed with the Finance Directorate: compensation in the amount of CHF 500,000 as well as damages of CHF 150,000 plus CHF 2.5 million. Proceedings pending.
06.11.2025:
The Health Directorate once again rejected the physician’s appeal, citing unchanged the well-known arguments of allegedly uncooperative behaviour, alleged lack of trustworthiness, alleged convenience certificates and alleged endangerment of the public.
16.12.2025:
The Administrative Court of Zürich did not consider the physician’s appeal, as it was in its view insufficiently substantiated.
05.02.2026:
The Federal Supreme Court in Lausanne accepted the appeal filed on 31 January 2026 against the non-consideration decision of the Administrative Court and took a procedurally unusual step: it instructed the Health Directorate, the Office of Public Health and the Administrative Court of the Canton of Zürich to comment within a set deadline on the question of suspensive effect. The fact that the Federal Supreme Court expressly requested all cantonal instances to submit statements is interpreted by accompanying jurists as an indication that the appeal is not considered manifestly unfounded.
Additional Information

Curriculum Vitae LD Dr. med. D.Sc. Sergio Dani
As of January 2026

  • LD Dr. med. D.Sc. Sergio Dani holds a Summa cum Laude doctorate in Medicine (MHH, Germany), a doctorate in Natural Sciences-Pathology (UFMG, Brazil), an associate professorship (Privatdozentur) in Genetics (USP, Brazil), a specialist title in General Medicine (Germany), and a Practical Physician title (FMH, Switzerland).
  • He is the principal author of over 30 original scientific articles in medicine, oncology, virology, genetics, toxicology and pathology, published in international peer-reviewed journals.
  • He received multiple scholarships, research grants and awards in Brazil (CAPES-DAAD, MOVER, PUC, FAPESP, FINEP, UFMG, CNPq, FAPEMIG), Germany (DAAD, Society of Friends of MHH) and Japan (National Cancer Institute, Monbusho).
  • He has developed original diagnostic and therapeutic methods in molecular genetics, oncology, virology and toxicology and published them in international peer-reviewed journals.
  • He is the author of three patents in the field of molecular genetics.
  • Dr. Dani is highly regarded by colleagues and patients and is recognised nationally and internationally as a trustworthy scientist and physician.

This above-average ethical and medical-scientific qualification of Dr. Dani is of great importance for the proper assessment of this case.

Note on responsibility

The information in this case report comes from the affected person themselves. The editorial team verifies whether a criminal or professional prosecution has taken place; it cannot verify the factual accuracy of every single statement. Responsibility for the correctness of the account lies with the respective author.

Name
Dr. med. Sergio Dani
Specialty
General Medicine
Additional qualifications
Genetics, Toxicology, Pathology
Special Functions
  • Associate Professor (Privatdozent) of Genetics (USP, Brazil)
  • Lecturer in Laboratory Medicine and Internal Medicine 2011-2012 at Heidelberg University Hospital
  • Member of various quality circles in General Medicine in Switzerland
  • Principal investigator for clinical trials
Position
Owner of a general practice with one employed physician and approximately 2,000 regular patients
Location
Zürich, Switzerland
Age
60 years
Practicing since
ab 1991 in der medizinischen Grundlagenforschung, ab 2010 als angestellter Assistenzarzt, Arzt oder selbstständiger Arzt
Persecuted since
Oktober 2024 (Entzug der eigenständigen Berufsausübungsbewilligung sowie der aufschiebenden Wirkung durch die Gesundheitsdirektion des Kantons Zürich)
Documented since
Mar 30, 2026
Status
Appeals rejected, proceedings ongoing
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