Peter Wildeford called it:

The first asks “Will WHO declare hantavirus a Public Health Emergency of International Concern before 2027?” — as of the time of writing, the median of community predictions is at 2% and I am currently forecasting 0.4%

We find out by Dec 31, 2026. 132 days to go

Open

Peter Wildeford: “The first asks “Will WHO declare hantavirus a Public Health Emergency of International Concern before 2027?” — as of the time of writing, the median of community predictions is at 2% and I am currently forecasting 0.4%

🔒 The test · locked Aug 22, 2026

MET if The World Health Organization declares hantavirus (the MV Hondius Andes-virus situation) a Public Health Emergency of International Concern under the International Health Regulations. Only a formal WHO PHEIC declaration counts; WHO risk assessments, situation reports, or 'grade 3 emergency' classifications do not count at any point, before 2026-12-31 23:59 (UTC).

Settles by documented review of public evidence against these locked criteria; the reviewer is named and the reasoning published.

Test details
Settled byevidence
Window2026-05-11 2026-12-31
TimezoneUTC
Data vintagelatest_revision
Min source tier1
Stated likelihood0.4% — preserved, never scored
Contract hash0xf82b6efd…e042e4
Full resolution criteria

Resolves YES if the World Health Organization formally declares the hantavirus situation a Public Health Emergency of International Concern (PHEIC) at any point before January 1, 2027, per an official WHO/IHR Emergency Committee statement. Wildeford put the probability of this at 0.4%.

Quote verified against the source

Peter WildefordThe Power Law (Substack)Said May 11, 2026Added to Thonest Aug 22, 2026Anchored Aug 22, 2026

Added by Thonest from a public source. The person quoted did not submit, approve, or endorse this record; the wording is verified against the source itself.

Read the original on blog.peterwildeford.com

In a blog post analyzing the MV Hondius Andes-hantavirus outbreak, Wildeford cites his own Metaculus forecast on a WHO emergency declaration.

History — append-only

2026-08-22
Recorded · Recorded and locked from the original source

Proof

Evidence hash0xe620ba0e…49747c
Source snapshot
Record fingerprint0xe620ba0edf7428a755608cb2195f438fb8046210752e83ee4b8752fb7b49747c
Proof path
2 hashes from this record to the anchored root
  1. 0xe660c164c3e7accf9d7211c89765375ca73bb54b112d1417d91799e4e49f3be1
  2. 0x3c99b8892437e2ca52088650cc3660fb81b59121c7edf049761ed300b5ff68b5
Merkle root0xf7cdbaf3cff72bdc30948f413930b45ef505078d8770d5a703963152aa0ddde1
batch #56 manifest · 4 entries
Registry0x3d74d9e2f0f4c741fc49b34cc119b6db0cef47c0 · entry #55
the contract refuses any batch that doesn’t follow the previous one, and has no function to edit or delete one — including for us
Anchored onchainbase-mainnet · Aug 22, 2026
0x6444542a…e3fbdd on block explorer
Quote checkThe quote appears verbatim in the response the platform returned.
Platform capture0xdf36e46777996732fb3e5f7a5d5b764d4990902da296c0adf5f40b436d657e35
view the canonical capture · the page as served to us, kept verbatim and covered by the evidence hash

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Related

World Health OrganizationMetaculusMV Hondius hantavirus outbreakPublic Health Emergency of International Concern