The protest at Parliament has been added to the Ministry of Health's Covid-19 locations of interest website.
It is listed as a close contact event on Saturday 20 February from 11.55am to 11pm and Sunday 21 February from 11am to 11.59pm.
People are advised to self-isolate for seven days and test on day five after being exposed at the location of interest.
They should also monitor symptoms for 10 days and test again if they feel unwell.
People are being urged to log their visit to the protest online so contact tracers can reach them.
There was a stand-off late last night between police and at least 100 protesters on Hill Street, alongside Parliament.
See how events at today's protest at Parliament unfolded here: