
TFF–001 / UnresolvedCOVID-19 origins: what the record establishes
The main entrance of the Wuhan Institute of Virology in 2016. The facility’s location and coronavirus research are established facts; the image does not establish the pandemic’s origin.

TFF–002 / DocumentedEcoHealth, Wuhan, and the funding chain
The Wuhan Institute of Virology received subaward funding through EcoHealth Alliance. The funding chain is documented; a causal link to SARS-CoV-2 is not.

TFF–003 / DisputedThe Proximal Origin paper and early emails
The 2023 ODNI report summarizes intelligence on potential links between the Wuhan Institute and the origins of COVID-19, while recording continued agency disagreement.

TFF–004 / DocumentedMasks: evolving guidance and public trust
The White House Coronavirus Task Force briefs the public on March 15, 2020, as federal health messaging changed rapidly.