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Louise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series

In 1886 Louise (often Jeanne-Antoinette) Pelletier, a child bitten and brought late to Paris, died after Pasteur’s rabies inoculations, one of the named failures inside a series presented as largely successful. In the causal graph this event weakens Health-System Capacity, a driver that strengthens Hospital beds (per 1,000 people) — a worsening welfare path.

Louise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series
Read the full account

In 1886 Louise (often Jeanne-Antoinette) Pelletier, a child bitten and brought late to Paris, died after Pasteur’s rabies inoculations, one of the named failures inside a series presented as largely successful. Pasteur’s March 1886 Academy paper had already counted hundreds of treatments; failures were politically costly and sometimes minimised in popular tellings.

Context

Post-exposure vaccination cannot outrun virus already in the central nervous system. Late presenters died in every early series. The laboratory still accepted desperate families, which is both access and risk. Grancher and colleagues injected. Sharing the clinic does not erase Pasteur’s protocol.

Why it matters

Health-system path as a documented limit and harm. Medium confidence on the exact civil-registration spelling of the child’s names. Meister’s improving row is not cancelled; it is not copied here.

If a number is not in the two records named above, it is not supplied here.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Louis Pasteur

    Person

    Direct responsibility

    responsibility level 0.28 · verified

    His laboratory accepted a late case. Physicians injected; the child’s prior delay was parental and provincial.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactLouise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series
    2. weakensDriverHealth-System Capacity
    3. strengthensIndicators (2)Hospital beds (per 1,000 people)
    Worsening path

    impact weight 0.3 · Effect from 1 December 1886 · verified

    A documented death after post-exposure treatment shows the method’s limit when incubation is advanced, a health-capacity worsening path of medium confidence.

    • Hospital beds (per 1,000 people)

      via Health-System Capacity

      Worse

      Strengthens · Relationship strength 0.18 (weight 0.3 × strength 0.6)

      Observed

      3.08 Per 1000 people · 1.24 below the normal line (2023)

      Worse than normal

      6 readings, 2018–2023: rose from 3.07 Per 1000 people to 3.08 Per 1000 people.

      Above normal = better

    • Under-five mortality rate (global)

      via Health-System Capacity

      Worse

      Weakens · Relationship strength 0.15 (weight 0.3 × strength 0.5)

      Observed

      37.4 deaths per 1,000 live births · 12.4 above the normal line (2024)

      Worse than normal

      7 readings, 2018–2024: fell from 40 deaths per 1,000 live births to 37.4 deaths per 1,000 live births.

      Above normal = worse

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.PMC — Pasteur historiography and laboratory practiceNational Center for Biotechnology Information · High credibility · verified
  2. 2.Académie des sciencesAcadémie des sciences · High credibility · verified
What the sources establish

The Académie des sciences at https://www.academie-sciences.fr/ (opens in a new tab) is the official home of the 1886 case communications. PMC Pasteur historiography at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1200696/ (opens in a new tab) independently insists that the human series included failures and later argument, not only Meister.

Established: at least one named child in the 1886 Paris series died after delayed treatment. Not established: a complete list of all treatment deaths, or that the laboratory caused rabies rather than failing to stop it. Contribution is recorded as His laboratory accepted a late case. Physicians injected; the child’s prior delay was parental and provincial. The impact note is A documented death after post-exposure treatment shows the method’s limit when incubation is advanced, a health-capacity worsening path of medium confidence. The dated heading stays Louise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series on 1886-12-01, not a later statue, UNESCO listing, or school film.

Confidence is stated on the impact path, not hidden in adjectives. A delayed-case death is not Meister’s survival. Mixed effects of Louise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series are separate paths.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

That reading is an impact-path choice, not a property stored on the Fact itself.

Shared responsibility is part of Louise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series. Naming Louis Pasteur does not delete co-authors, institutions, or later transmitters. The lag from 1886-12-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorLouis Pasteur
  2. contributed toFactLouise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series
  3. weakensDriverHealth-System Capacity
  4. strengthensIndicatorHospital beds (per 1,000 people)

Cite this page

Factrail. (2026). Louise Pelletier dies after delayed rabies treatment in Pasteur’s Paris series. Factrail. https://factrail.ai/facts/pasteur-pelletier-1886

https://factrail.ai/facts/pasteur-pelletier-1886

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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