The man in his 40s from Sydney's north-western suburbs visited the National Gallery of Australia and Via Dolce Pasticceria, which had been been identified as potential exposure sites.

ACT Health on Saturday night updated its directions and classified the gallery - specifically the Botticelli to Van Gogh exhibition and exhibition gift shop - between 12pm and 1.45pm on June 14 as a "close contact exposure location".

Via Dolce Pasticceria is has since been classified as a "casual contact exposure location" between 2.45pm and 3.15pm on that day.

ACT residents who attended the Botticelli to Van Gogh exhibition, the NGA's exhibition gift shop and Via Dolce Pasticceria on Bunda Street during the times listed above must immediately complete an online declaration form and follow directions from ACT Health on getting tested for COVID-19.

People who were at the exposure sites at the gallery must isolate for the full 14 days from the time of exposure, regardless of negative test result.

People who were at the cafe on Bunda Street must isolate until a negative test result is received, regardless of whether they have any symptoms or not.

They must also monitor for COVID-19 symptoms for at least 14 days since they were last at the exposure location and get re-tested for COVID-19 if they experience any symptoms, no matter how mild.

This includes people who have had the COVID-19 vaccine.

"In working with NSW Health, we have clarified the assessment of the two exposure locations and are continuing to take a highly precautionary approach, consistent with NSW Health," ACT Health said in a statement.

"(We) will be contacting anyone who has already competed a declaration form and is currently isolating to inform them of these updated health directions."

ACT Health will also remain in contact with close contacts to support them through their quarantine period.

MORE NEWS

For people who were at the National Gallery of Australia, including the main gift shop, from 12-2pm on June 14 and who did not attend the Botticelli to Van Gogh Exhibition at the dates and times specified, there is no requirement to quarantine.

However, they are urged to monitor closely for COVID-19 symptoms, immediately get tested and isolate until a negative test is received.

The latest directions come as NSW overnight recorded two new locally acquired cases, bringing the cluster linked to a shopping centre in the city's eastern suburbs to six.

A woman in her 40s and a man in his 50s both visited the Westfield Bondi Junction shopping centre.

NSW Health has also been notified overnight of a new locally acquired case, a 30-year-old man, that will be included in tomorrow's numbers.

ACT Health has classified Bondi Junction Westfield as a casual contact site.

People who visited the the centre on June 12 at 11am-12pm and June 13 at 1pm-2pm and 4pm-4.30pm are urged to undertake a test.

"People currently in the ACT who were at Bondi Junction at the dates and times specified need to immediately complete an online declaration form, get tested for COVID-19 and isolate until a negative test result is received, regardless of whether you have any symptoms or not," ACT Health said.

Extra staff have been rostered on at existing ACT testing clinics and demand will be monitored.

ACT Health advised residents to stay up to date by checking the ACT COVID-19 website regularly.

The public is encouraged to see the COVID-19 website for further information on getting tested.

CORRECTION: A previous version of this story said people who had attended the Botticelli to Van Gogh exhibition needed to isolate until they received a negative test result. This was incorrect, they must isolate for the full 14 days since they were last at the exposure site.

Our journalists work hard to provide local, up-to-date news to the community. This is how you can continue to access our trusted content: