# Gruner’s Canon prints disease as humoral crisis to be ripened, a rival to later inoculation

Date: 1930

## The fact

The same 1930 English Book I prints fevers and crises as movements of humour to be managed by regimen and evacuation rather than by a preventive inoculation. Avicenna did not vote against Jenner or against later smallpox programmes. The harm path is the printed crisis-frame that later faculties could cite while inoculation was still contested.

## Context

Observational fever-writing is not nothing. It is also not a vaccine. Do not invent a unique 1800s uptake coefficient. Confidence is medium on later delay, high that the printed physiology is crisis-not-prevention.

[Avicenna](/people/avicenna) is not the sole author of every later object, law, or museum label that uses the name. Shared work with courts, excavators, printers, spouses, officials, and later states does not erase a documented role, and it does not make an ancient person the signer of a twentieth-century statute.

## Evidence and sources

The named official or archival page and the independent publisher independently describe this instrument.

Official or archival record: Gruner, A Treatise on the Canon of Medicine of Avicenna (1930) — scan (https://archive.org/details/AvicennasCanonOfMedicine; Internet Archive).

## Significance

A printed crisis-physiology can weaken later immunization investment when faculties treat prevention as an insult to the Canon.

A printed crisis-physiology can weaken later immunization investment when faculties treat prevention as an insult to the Canon.

## What is established and what is not

Established as a dated public record of this instrument.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

The date is the date of this instrument, not a licence to back-date every later harm or benefit.

## People

- Avicenna: https://factrail.ai/people/avicenna

## Drivers

- Public and donor investment in immunization systems: https://factrail.ai/drivers/ph-immunization-investment

## Sources

- https://www.jameslindlibrary.org/articles/ibn-sinas-canon-of-medicine-11th-century-rules-for-assessing-the-effects-of-drugs/
- https://archive.org/details/AvicennasCanonOfMedicine

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/av-humoral-crisis-vs-inoculation