This applies at PhD defences at Sahlgrenska Academy

At the council for heads of institutes held on September 1st, all heads agreed that a maximum of 50 people may be present at a thesis defence under the auspices of the faculty, and that the Sahlgrenska Academy’s premises may not be used for indoor mingling. This applies until further notice. Even when the dissertation takes place in other premises, the organizer must take responsibility for limiting crowding.
Information about what applies to the faculty’s doctoral education during the pandemic can be found on the doctoral student portal.