This market will resolve to "Yes" if one or more credible health organizations (e.g. CDC, WHO, etc.) claims an H5N1 bird flu case was transmitted from one human to another human by January 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No".

The primary resolution source for this market will be information from such a credible health organization, however in case of ambiguity a consensus of credible reporting will also be used.