Less than a week after its first community case in six months, South Australia goes into six-day lockdown.

The community cluster in Parafield in Adelaide’s north has continued to grow, ever since an 80-year-old hotel worker caught the virus from an international traveller.

She then passed on infection to 15 family members.

Since then, the cluster has grown to 22.

SA Premier Steven Marshall says a lockdown was crucial to prevent the virus spreading any further.

A COVID-19 cluster in Parafield in Adelaide’s north has grown to 22.

“We need this circuit breaker, this community pause,” he said.

“We are at a critical point, but we will get through this.”

As of midnight today, restaurants, gyms and schools will be closed, while outdoor sport, regional travel and weddings will be banned.

No visits to aged care homes will be allowed and masks will be made mandatory to wear whenever outside the home.

South Australia Chief Public Health Officer Professor Nicola Spurrier revealed a further two new COVID-19 cases recorded today.

In response to the outbreak, more than 11,000 tests have been conducted in SA over the past two days.

Watch: The Premier and health authorities provide a major COVID-19 update for South Australia.

Further Perth and national news on SoPerth.com.au.