place for these and other events and venues previously covered, but with two important changes. firstly, guidance will now step elite that the organisers of large events of 1000 or more people should check the certification status of at least 50% of attendance rather than the current 20% or at least 1000 people, whichever figure current 20% or at least 1000 people, whicheverfigure is highest. and second, from monday, the requirement to be fully vaccinated for the purposes of covid certification will include having a booster, if the second dose was more than four months ago. the nhs scotland covid safe sap for domestic use will be updated from thursday so that its qr code includes evidence about booster vaccination. qr code includes evidence about boostervaccination. it qr code includes evidence about booster vaccination. it will also be possible to update copies of status which are valid for three months and be possible to gain admission into events and venues covered by the certificat