South Australia has recorded three new COVID cases, including the first instances of local transmission since the state opened its borders to New South Wales, Victoria and the ACT last week.
Anyone who attended two venues — a children's theatre, and Business SA's Unley offices — during exposure periods has been ordered to immediately enter quarantine.
Two of the new cases, both men in their 50s, are South Australian residents and had been vaccinated.
SA Health believes they caught the virus from an interstate traveller who was at an event they were attending.
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