SA Premier Peter Malinauskas has outlined a number of changes to close contact and isolation rules in South Australia.

Effectively immediately, the quarantine period for household close contacts will go from 14 days to seven, subject to a negative rapid antigen test.

From midnight tonight, you will need to spend four hours unmasked with a Covid-positive person to be considered a close contact – up from 15 minutes.

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And if you've recently recovered from Covid and you’re re-exposed to a positive case, you won't have to isolate for 12 weeks (previously eight) after your isolation period ends.

The indoor mask mandate is also likely to be removed on April 14. “Barring a new variant or a big change, we are working towards removing mask mandates ... the day before Good Friday,” Malinauskas said.

Masks would still be required in high-risk settings such as aged care.

More to come.