ACT leader David Seymour says he hopes Covid-19 isn't spreading - otherwise, we're in "for a long, hard lockdown".

Auckland is at COVID-19 alert level three for three days, while a rapid investigation continues into three community cases.

They involved are a Papatoetoe mother, father and daughter. The woman works at LSG Sky Chefs in Mangere - dealing with airline laundry.

Seymour told The Country's Jamie Mackay that it appears as though someone has flown into the country and passed on Covid-19 through airline laundry, and potentially left the country.

He says that he hopes the cases are contained as many businesses that survived the first two lockdowns can't afford another.

"I had people texting me last night said 'Mate, I'm screwed'. For some businesses, they can't afford to have a loss of business."

He urged people to use the app - telling listeners that they can be rest assured their data is kept private. 

However, Seymour says that the Government has known for a long time the app isn't working, and they have missed other opportunities - such as Sam Morgan's Bluetooth card - to do this better. 

"We've been saying throughout this whole saga is we need to get the public and private sector working better, we need to get more technology into our response, and as the Simpson-Roche report found, the Ministry of Health almost tries to prevent private sector and technology being used. Now we're playing the heavy cost for it." 

Seymour says there is nothing to worry about from getting the Covid-19 vaccine, but the Government can't "bet on black" and not look at other options. 

LISTEN ABOVE