Special government advisors have told the Waitangi Tribunal they don't know why ethnicity hasn't been a greater focus of the vaccine rollout.

Covid-19 modeller Shaun Hendy says his advice showed a significant risk disparity - even when age was factored in.

The government has said it went with a general age-based rollout because of the younger Māori demographic.

Te Manu Korihi reporter Jamie Tahana is following the proceedings and joins Max Towle with the latest.