Health Minister Andrew Little is setting out how New Zealand's hospital system is preparing to handle Covid-19 cases.

The minister, Chief Medical Officer Dr Andrew Connolly and GP Dr Jeff Lowe are revealing the plan for how the health system could manage cases following the current vaccination drive.

The Ministry of Health expects a worst case scenario of up to 5200 cases of Covid 19 per week in the Auckland and Northern region, assuming a 90 percent vaccination rate can be achieved. The modelling is part of planning for how hospital and ICU systems would cope.

Two days ago, Little told Morning Report since the start of the pandemic about 100 ICU beds had been added nationally, but capacity could be surged at the cost of other patients' planned care.

Connolly told Nine to Noon this week the worst case scenario would see up to 150 people hospitalised at a time.

Covid-19 Response Minister Chris Hipkins has says people with Covid-19 would soon be asked to quarantine at home as a necessary step to prevent MIQ places being further limited for people coming from overseas.

"There's no question we're going into a period where we are likely to see quite significant growth in the number of cases," he says.