The One Health Junior Olympics 2026 is an initiative promoted by the One Health São João Group, part of the São João Local Health Unit (Portugal), in partnership with the School Health Unit, to celebrate International One Health Day on November 3.
Aimed at secondary school students, the Olympics consist of a knowledge competition featuring 30 online questions exploring the interconnections between human, animal and environmental health, and the challenges of health promotion from a One Health perspective.

On 7 November, ICBAS – Instituto de Ciências Biomédicas Abel Salazar of University of Porto marks the International One Health Day with a public event inviting everyone to take part in scientific sessions, debates and workshops exploring the links between human, animal, plant and environmental health.

The initiative will take place in the Abel Salazar Building (entrance via Rua Prof. Vicente José de Carvalho, 4050-623 Porto), and the programme includes: