The Drug Foundation is worried about the low rates of vaccination among users.

Earlier today, University of Otago epidemiologist Michael Baker said he was concerned Covid-19 was still being transmitted in parts of Auckland, and social workers and police should work with health officials to reach marginalised groups.

Professor Baker is a member of the Drug Foundation's board.

The Foundation's executive director Sarah Helm speaks to Māni Dunlop about what needs to be done.