Anyone who was at the Dance Festival at Beau Sejour 19-22 January should immediately self-isolate.
Public Health believes that those attending the event may have been exposed to one or more positive Covid-19 cases.
It follows contact tracing around the recently diagnosed infections.
The States of Guernsey has issued guidance saying all who were at the meeting, including the children taking part and the adults accompanying them, should self-isolate immediately.
It comes as the number of known active cases of coronavirus in Guernsey has risen to 186. There have been 44 new cases in the latest 24 hour period
Four people with the infection are in hospital.
Any members of the same household should also self-isolate.
They should all follow the instructions here.
Unless you develop symptoms or are directly contacted by the contact tracing team, the self-isolation period will end fourteen days after the last day of attendance at the festival meaning for many, only a relatively short period of self-isolation is necessary.
The self-isolation period finishes at 23:59 on the date stipulated.
You do not need to be tested unless you develop symptoms.
You do not need to contact us to tell us about interactions you may have had with other people before going into self-isolation, just begin isolation as soon as you can.
Dr Nicola Brink, Director of Public Health said “We know this will affect a lot of people as there were large numbers who attended the festival, or live with someone who did. We have taken this decision because of a specific case identified last night, and it is very much worthwhile as some of those who attended may just now be becoming particularly infectious and potential 2 spreaders of the virus. So if you were at the festival at any point, please self-isolate as quickly as you can, and be alert to any symptoms developing for you or members of your household. By doing this, you’re really helping us keep the number of further cases down.
Don’t forget that right now we expect the whole community to stay at home and only go out for essential reasons and two hours of outdoor exercise or activity. This is critical at this point and we need everyone to take it very seriously if we are to make this lockdown as short and effective as possible.”
Any key workers among those now needing to self-isolate should contact their line managers.