"Anti-vaxers" will not be able to send their children to childcare centres or kindergarten if they refuse to have them immunised, under new rules to be introduced in Victoria.

The state government says it will expand its "no jab, no play" rules so that all children will need to be fully vaccinated before they can attend childcare or kindergarten as of January 1 next year.

More than 90 per cent of Victorian five-year-olds are fully immunised. Credit:Wayne Taylor

The Labor government took the policy for childcare centres to the 2014 election, but announced on Sunday it would expand it to also include kindergartens.

Health Minister Jill Hennessy said the government would also remove an exemption for "conscientious objectors", meaning children whose parents refused to vaccinate them on ideological grounds would not be enrolled.