Criteria and resolution according to the original Metaculus question:

https://www.metaculus.com/questions/23387/will-an-avian-influenza-virus-in-humans-be-declared-a-public-health-emergency-of-international-concern-by-the-world-health-organization-before-2030/

Resolution Criteria

This question will resolve as Yes if, prior to January 1, 2030, an outbreak of a virus classified as a “Highly Pathogenic Avian Influenza” presenting in humans is declared a “Public Health Emergency of International Concern” (PHEIC) by the World Health Organization. If this PHEIC declaration does not happen prior to January 1, 2030, this question resolves as No.

Fine Print

A PHEIC must be declared and is verifiable through common communication channels of the WHO such as its website or other credible sources

Any type or subtype of Avian influenza is acceptable to meet this criteria, such as H5N1 or H7N9.

The PHEIC must be declared as a result of a human outbreak, not in response to an animal outbreak of the virus or the effects of the virus spreading in non-human species (i.e. shortages of food).

Sustained human-to-human transmission is not necessarily a requirement to resolve this question as a Yes.

Declarations by the CDC or other health organizations are not acceptable to resolve as a Yes.