The state-run centres include three new drive-through vaccination sites, at the Former Ford Factory in Broadmeadows, at Sandown Racecourse in Springvale and at the Eagle Stadium in Werribee.
Health Authorities are strongly recommending that primary school-aged children, when they are not at home, also wear a mask as an extra precaution against this virus.
The court said any interim appointment would be temporary, would not create special rights in favour of the service provider and would remain subject to the result of the fresh tender process.
Home Affairs Minister Tony Burke said migrant workers often hesitate to approach government agencies directly because of concerns about their visa status or possible retaliation from employers.